WO2010087899A2

WO2010087899A2 - Elastic hyperextension brace assembly and methods of use

Info

Publication number: WO2010087899A2
Application number: PCT/US2009/067152
Authority: WO
Inventors: Lonnie Paulos; Kim Nelson
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-01
Filing date: 2009-12-08
Publication date: 2010-08-05
Anticipated expiration: 2011-08-01
Also published as: WO2010087899A3

Abstract

Embodiments of the hyperextension brace assembly utilize an elastic cross-strap attached to mounting facilities about a joint to provide progressive resistance to the extension of limbs about the joint. The elastic cross-strap assembly is positioned from a cross origin behind the joint to attachment points on upper and lower mounting facilities on the upper and lower limb portions and provides an opposing tensile force that limits the extension of mounting facilities and the limb portions. In embodiments for a knee joint, the brace assembly provides a progressive resisting force to resist hyperextension of the knee. Embodiments of the assembly are able to accommodate different joints, different size wearer’s of the assembly and different tension settings such as for athletes during competition. Embodiments of the brace assembly can be used bilaterally and can be made without metal bracing to comply with the requirements of some sports.

Description

TITLE OF THE INVENTION:

ELASTIC HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE

CROSS-REFERENCE TO RELATED APPLICATIONS:

[0001] The present application claims the benefit of U.S. Provisional Application Ser. No. 61/148,973, filed Feb. 1, 2009, entitled "HYPEREXTENSION BRACE ASSEMBLY," PCT Application No. PCT/US2009/046,183 filed June 3, 2009 entitled "HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE," U.S. Provisional Application Ser. No. 61/262,723, filed Nov. 19, 2009, entitled "HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE" and U.S. Provisional Application Ser. No. 61/263,737, filed Nov. 23, 2009, entitled "ELASTIC HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE" all of these applications are herein incorporated by reference in their entirety.

[0002] The US designation in the present application is also a Continuation-In- Part application of PCT Application No. PCT/US2009/046,183 filed June 3, 2009 entitled "HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE." The Continuation-In-Part application claims the benefit of PCT Application No. PCT/US2009/046,183 filed June 3, 2009 entitled "HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE," U.S. Provisional Application Ser. No. 61/058,555, filed June 3, 2008, and entitled "HYPEREXTENSION BRACE ASSEMBLY," U.S. Provisional Application Ser. No. 61/148,973, filed Feb. 1, 2009, and entitled "HYPEREXTENSION BRACE ASSEMBLY," U.S. Provisional Application Ser. No. 61/262,723, filed Nov. 19, 2009, entitled "HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE" and U.S. Provisional Application Ser. No. 61/263,737, filed Nov. 23, 2009, entitled "ELASTIC HYPEREXTENSION BRACE ASSEMBLY AND METHODS OF USE" all of which are herein incorporated by reference in their entirety. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT:

[0003] Not Applicable

REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISC APPENDIX: [0004] Not Applicable

BACKGROUND OF THE INVENTION:

[0005] Field of the Invention:

[0006] The present invention relates to braces that can prevent the hyperextension of a joint, and more specifically relates to a knee brace having an elastic cross-strap that assists in preventing hyperextension.

[0007] Prior Art:

[0008] Braces are often utilized to support joints when damage, deformation, surgery or the like has caused the joint to be instable. Most of the running, jumping, cutting or twisting sports today have the risk of damaging the knee. These injuries frequently involve a tearing the ACL in the knee. Many injures to the knee joint have a mechanism of injury of hyperextension in which the ACL is stretched or torn. Many methods have been employed to prevent this action to the knee and prevent the injury to the ACL. Taping techniques as well as rigid braces have been designed to prevent this condition.

[0009] One common method of treatment and prevention for these injures today is the use of the rigid braces. Common to most, if not all, of these devises are, adjustable metal hinges on the medial and lateral side of the knee. Rigid arms on each side connect the hinges to curved thigh and calf pieces or cuffs. A series of Velcro straps attached to these rigid side pieces then wrap around the leg to mount and hold them in place with the cuffs and the hinges. Adjusting the hinge from allowing extension or hyperextension blocks the knee from moving into to these positions quite well. [0010] With respect to these rigid braces however, many sports have rules in which players cannot have any metal or rigid devices on any part of their body to compete due to metal or hard structures that may cause injury to other players. One of these sports is soccer, which is also one of the most popular sports in the world. Additionally, with the introduction of bracing both knees for prevention of injury, the bracing must have a very low profile on the knees to prevent the braces from catching against each other during competition.

[0011] Another technique of treating and preventing joint injuries includes taping techniques. While reinforcing joint strength, taping typically does not involve rigid braces that cause problems with sporting rules. Taping techniques have shown some promise for this situation but these techniques still have some of the disadvantages of tape such as loosening, speed of application and rigidity to name just a few. Typically, these disadvantages require the wearer to have the tape reapplied to tighten the tape and maintain the desired effect of strengthening the joint.

[0012] Prior art embodiments of braces having strap elements that cross posterior to the knee joint include U.S. Patent No. 4,817,588 to Gary Bledsoe (Bledsoe) and U.S. Patent No. 6,368,297 to Jan F.A. Smits (Smits). Bledsoe discloses a restraining strap network positioned entirely behind the knee that has to cooperate with additional brace elements including hinges and connecting means to connect the brace elements to the wearer's leg. Bledsoe does not disclose embodiments of the strap network extending anterior to the limbs about the joint. Smits discloses a brace having a strap that crosses at the back of the knee that like Bledsoe is entirely behind the knee and has to cooperate with other brace elements. Smits also specifically uses stop portions in a hinge to limit extension of the brace elements. Smits does not disclose limiting extension of the brace with the strap.

SUMMARY OF THE INVENTION:

[0013] The following summary is included only to introduce some concepts discussed in the Detailed Description below. This summary is not comprehensive and is not intended to delineate the scope of protectable subject matter. [0014] Embodiments of the elastic hyperextension brace assembly utilize an elastic cross-strap attached to mounting facilities about a joint to limit the extension of limbs about the joint. The cross-strap has elastic properties that allow it to provide progressive resistance as the strap is stretched. The elastic cross-strap assembly is positioned from a cross origin behind the joint to attachment points on upper and lower mounting facilities on the upper and lower limbs and provides an opposing tensile force that limits the extension of the mounting facilities and the limbs about a joint. In embodiments for a knee joint, the brace assembly provides a resisting force to resist hyperextension of the knee. Embodiments of the assembly are able to accommodate different joints, different size wearer's of the assembly and different tension settings such as for athletes during competition. Embodiments of the brace can be used bilaterally and can be made without metal bracing to comply with the requirements of some sports.

[0015] An object of embodiments of the invention is to provide an elastic knee brace assembly having an upper mounting facility for positioning the brace assembly about the thigh area of a user's leg, a lower mounting facility for positioning the brace assembly about the shin area of the user's leg, a elastic cross-strap having a cross origin, and the cross-strap is attachable to the upper and lower mounting facilities whereby the cross-strap limits the extension of the upper mounting facility and the lower mounting facility about the joint when the cross origin is positioned posterior to the user's knee.

[0016] In some embodiments, the upper and lower mounting facility are operably connected with a flexible upright comprising a rigid material capable of bending about its longitudinal axis without stretching or compressing along its longitudinal axis.

[0017] It is another object of embodiments of the invention to provide a knee brace assembly where the upper mounting facility has an upper mount front portion, the lower mounting facility has a lower mount front portion, the elastic cross-strap further comprising at least two upper arms to connect to the upper mounting facility at an upper attachment point and at least two lower arms to connect to the lower mounting facility at a lower attachment point, the cross-strap having at least two lengths extending along each upper and lower arm and between the upper and lower attachment point, and the cross- strap having an adjusting facility to adjust the at least two lengths to adjust the tension in the elastic cross-strap.

[0018] It is a further object of embodiments of the invention to provide a knee brace assembly where the elastic cross-strap comprises a single strap capable of being woven about the user's leg to create the upper mount front portion, the lower mount front portion, the upper arms, the lower arms and an x-pattern as the cross origin.

[0019] It is yet another object of embodiments of the invention to provide a knee brace assembly where the elastic cross-strap comprises at least two straps, each strap having an upper and lower end, the two strap upper ends comprise the upper arms and the two strap lower ends comprise the lower arms, and the two straps are capable of being woven about the user's leg to create an x-pattern as the cross origin.

[0020] It is an object of embodiment of the invention to provide a knee brace assembly where the elastic cross-strap comprises an x-shaped strap having the cross origin, the at least two upper arms and the at least two lower arms, the lower mounting facility comprises a shin shell having a means to secure the shin shell about the shin area and a means to attach the shin shell to the cross strap arms, or the upper mounting facility comprises a thigh cuff of a knee brace and the lower mounting facility comprises a tibial cuff of a knee brace.

[0021] It is another object of embodiments of the invention to provide a knee brace assembly where the upper mounting facility comprises a thigh portion operably connected to a first article of clothing worn by the user and the lower mounting facility comprises a shin shell operably connected to a second article of clothing worn by the user,

[0022] It is another object of embodiments of the invention to provide a knee brace assembly where the upper and lower mounting facilities are connected about a hinge or the upper and lower mounting facilities are connected about a sleeve and a flexible upright.

[0023] It is yet another object of embodiments of the invention to provide a knee brace assembly where an orientation of the upper arms of the cross-strap between an upper anterior resistance point and the cross origin create an upper tensile force line, an orientation of the lower arms between a lower anterior resistance point and the cross origin comprises a lower tensile force line, and the angle between the upper tensile force line and the lower tensile force line from the cross origin comprises an angle of about 50 to 140 degrees when the brace is worn about the wearer's extended knee.

[0024] It is an object of embodiments of the invention to provide an elastic hyperextension brace assembly having an upper mounting facility capable of securing a brace on a user's first limb about a joint, a lower mounting facility capable of securing the brace on a user's second limb about the joint, an elastic cross-strap having at least two arms attachable to the first and second mounting facility, at least one of the arms capable of extending from the lower mounting facility laterally to a position posterior to the joint and continuing medial to the upper attachment point, and at least one of the arms capable of extending from the lower mounting facility medially to a position posterior to the joint and continuing lateral to the upper attachment point whereby the cross-strap is capable of limiting the extension of the user's first and second limb about the joint.

[0025] It is another object of embodiments of the invention to provide an elastic hyperextension brace assembly wherein the elastic cross-strap is capable of limiting the extension without the use of a hinge about the joint.

[0026] It is an object of embodiments of the invention to provide a method of supporting a wearer's joint, the method comprising the steps of securing an upper mounting facility about the upper limb portion of the user's joint, securing a lower mounting facility about the lower limb portion of the user's joint, extending at least one arm of an elastic cross-strap from the lower mounting facility laterally to a position posterior to the joint and continuing medial to the upper mounting facility, and extending at least one arm of the cross-strap from the lower mounting facility medially to a position posterior to the joint and continuing lateral to the upper mounting facility whereby the elastic cross-strap is capable of limiting the extension of the user's first and second limb portions about the joint.

[0027] It is another object of embodiments of the invention to provide a method of supporting a wearer's joint where the step of securing an upper mounting facility comprises securing an upper cuff of a hinged knee brace, and the step of securing a lower mounting facility comprises securing a lower cuff of the hinged knee brace.

[0028] It is yet another object of embodiments of the invention to provide an elastic brace assembly comprising an elastic cross-strap forming an upper mounting facility and a lower mounting facility and the elastic cross-strap further forming a cross origin between the upper and lower mounting facilities whereby the cross-strap provides a resistance force to an extension of the upper mounting facility and the lower mounting facility about the cross origin when the cross origin is positioned posterior to the user's joint.

[0029] In some embodiments, the elastic cross-strap further comprises at least one portion forming a strap arm extending from the cross origin to at least one upper anterior resistance point and at least one portion forming a strap arm extending from the cross origin to at least one lower anterior resistance point.

[0030] In some embodiments, the upper and lower anterior resistance points are portions of the strap arms providing the resistance force to the extension of the upper and lower mounting facility about the cross origin.

[0031] It is yet another object of embodiments of the invention to provide an elastic hyperextension brace assembly having at least one side brace element having an upper and lower brace portion, an elastic cross-strap and the elastic cross-strap attached to the side brace elements whereby the elastic cross-strap is capable of providing a resistance force to an extension of the upper and lower brace portions about a joint bending axis when the side brace elements are mounted about the bending axis. In some embodiments, the upper and lower portions of the side brace are connected by a hinge or a flexible upright.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS:

[0032] In order that the manner in which the above-recited and other advantages and features of the invention are obtained, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Understanding that these drawing depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

[0033] FIG. IA illustrates a front view of one embodiment of the brace assembly showing a shin shell.

[0034] FIG. IB illustrates a side view of the embodiment the brace assembly of FIG. IA mounted on the knee of a wearer.

[0035] FIG. 2 illustrates a side view of one embodiment of the brace assembly having an upper and lower mounting facility.

[0036] FIG. 3 illustrates the force patterns of one embodiment of the cross-strap when mounted around a knee.

[0037] FIG. 4A illustrates a front view of one embodiment of the brace assembly comprising a single cross-strap about the knee of a wearer.

[0038] FIG. 4B illustrates a rear view of one embodiment of the brace assembly comprising a single cross-strap about the knee of a wearer.

[0039] FIG. 5 illustrates a rear view of one embodiment of the brace assembly having an x-shaped cross-strap cooperating with a sleeve.

[0040] FIG. 6 illustrates a side view of one embodiment of the brace assembly showing the cross-strap attachment to the upper and lower mounting facilities on a sleeve.

[0041] FIG. 7 illustrates a front view of another embodiment of the brace assembly with the side brace elements extended.

[0042] FIG. 8 illustrates a front view of one embodiment of a brace assembly positioned as if it were put on a wearer's leg.

[0043] FIG. 9 illustrates a front view of another embodiment of the lower portions of a brace assembly with a shin shell positioned as if it were on a wearer's leg.

[0044] FIG. 10 illustrates a rear view of another embodiment of the brace assembly.

[0045] FIG. 1 IA illustrates a side view of another embodiment of the brace assembly mounted about a wearer's knee. [0046] FIG. 1 IB illustrates a front view of the embodiment in FIG. 1 IA as if it were on a wearer's leg.

[0047] DETAILED DESCRIPTION OF THE INVENTION: [0048] Although embodiments are described for use with knee bracing and reinforcement, it is understood that the methods and systems described can be used for similar medical situations where support of moving joints may be needed. Notwithstanding the specific example embodiments set forth below, all such variations and modifications that would be envisioned by one of ordinary skill in the art are intended to fall within the scope of this disclosure.

[0049] Embodiments of this new brace assembly comprise a non-rigid or semirigid brace utilizing an elastic cross-strap to provide a progressive resisting force to joint hyperextension. Embodiments of this brace assembly may optionally include a flexible sleeve or other traditional brace components. Although embodiments of the assembly do not need side hinges, metal upright stays or braces and hinges, it is contemplated that embodiments of the brace assembly can also include these elements.

[0050] One Embodiment of the Hyperextension Brace Assembly: [0051] Although it is contemplated that embodiments of the assembly can support many different types of skeletal joints such as elbows or knees, the illustrations below will use an embodiment directed to support a person's knee. Therefore, references to anatomical portions of the wearer's knee are for illustration purposes and not as a limitation.

[0052] Embodiments of this new brace assembly comprise at least one elastic hyperextension cross-strap, at least one upper mounting facility and at least one lower mounting facility. Generally, the upper mounting facility positions and secures the brace assembly about the thigh area of a user's leg, the lower mounting facility positions and secures the brace assembly about the shin area of the user's leg and the elastic hyperextension cross-strap attaches to the upper and lower mounting facilities whereby the elastic cross-strap can provide progressively increasing resistance to the extension of the user's knee when the elastic cross-strap is positioned posterior to the user's knee. In some embodiments, the upper and lower mounting facility are defined entirely by the elastic hyperextension cross-strap to help secure the assembly to the user's leg. In some embodiments, the upper and lower mounting facility are separate elements are defined by portions of brace elements cooperating with the elastic cross-strap.

[0053] In some embodiments, the brace assembly stabilizes the knee from hyperextension in the 5-25 degree range.

[0054] As shown in FIG. IA and IB, the elastic cross-strap 160 is an elongated element able to provide a progressive tensile resistance force and capable of creating a cross pattern that creates a cross origin and strap arms. The elastic cross-strap also comprises means to attach ends of the straps, the strap arms, to the upper and lower mounting facilities. In some embodiments, the elastic cross-strap comprises one or more straps of pre-determined lengths and elastic cross- straps are selected based on the length needed for that wearer. In other embodiments, the elastic cross-strap has adjustment elements that allow the cross-strap to be adjusted to fit the wearer and provide different resistance properties to help prevent joint extension.

[0055] The elastic hyperextension cross-strap can be made from material to provide resistance to stretching in one direction. In a preferred embodiment, the elastic cross-strap is a pliable elastic material that provides progressive resistance to stretching and as the material stretches, the resistance to stretching increases. As an example, the resistance properties of embodiments function similar to the resistance properties of a rubber band. In one embodiment, the elastic material is similar to elastic sports tape. In other embodiments, the elastic material can comprise a rubber material, a plastic material or a spring that can provide resistance properties similar to those of a rubber band. It is also contemplated that the elastic strap may comprise a combination of elastic and non- elastic material that still provide the elastic properties required of the strap. As an example, and not for limitation purposes, these combinations may comprise combinations or laminates include cloths, fabrics, threads, struts or other materials combined with an elastic material through sewing, adhesives, Velcro attachment or even simple adjacent placement to elastic materials. These combinations or laminates may comprise multiple materials that can increase the adherence of the cross- strap to itself or other materials and may be comprise combined materials at particular, not all areas of the strap. Combinations of elastomeric materials with varying resistance properties are also contemplated.

[0056] The length, width and elastic properties of the elastic cross-strap can be varied based on the properties desired for the wearer and/or the sport the wearer will participate in. Although some of the discussion relates to a single elastic cross-strap, it is understood that multiple elastic cross-straps or straps can be used to provide the functional properties of the elastic cross-strap. More than one elastic cross-strap or strap can be used such that their properties combine to provide the desired resistance properties.

[0057] As shown in FIG. IA, the elastic cross-strap 160 has two cross-strap arms 162 and 164 respectively configured to attach to a lower arm end to a lower mounting facility 120 at a lower attachment point. The lower mounting facility further comprises securing elements, such as straps 124 to engage the wearer's lower limb as well as points to attach this element to the other elements of the assembly. Embodiments of the lower mounting facility include but are not limited to a hard shell, pad, cuff, portions of the strap, portions of a sleeve or any other element capable of mounting the brace to the wearer's limb. In this embodiment, the lower mounting facility 120 is a shin shell 121 mounted anterior to the knee and just below the wearer's knee with securing straps 124. In this embodiment, the tibial shell can be made of a flexible material or when desired, it can be made of more rigid material to provide some tibial protection to the wearer.

[0058] Means to attach the elastic cross-strap arms to the mounting facilities include, but are not limited to common attachment means such as: rigid fasteners such as rivets, adhesives or sewing; slidable attachment points such as slots or channels, pivoting fasteners such as rivets or buttons; and removable fasteners such as Velcro, buttons, buckles, snaps or hooks. It is contemplated that the means of attachment, such as with Velcro straps or buckles, will let the cross-strap be tightened or loosened as desired for comfort, support or specific resistance reasons. [0059] As shown, the attachment of the elastic cross-strap in FIG. 1 is through lower attachment points that comprise multiple openings 122 in the shell positioned so that the elastic cross-strap arms 162 and 164 weave through the shell and extend up towards the wearer's thigh. When installed as in FIG. IB, these elastic straps extend from the anterior tibia at the patellar attachment and wrap posterior with one wrapping medial and one wrap laterally to attach to the wearer's anterior thigh pad. This "X-strap" configuration creates elastic straps running from an anterior tibial pad 121 with one strap medial and one strap lateral to cross like an X in the popliteal fossa 103 behind the knee 105, then coming back to an anterior of thigh pad 140 in the middle to upper one-third of the thigh.

[0060] It is also contemplated that the shin shell can be configured to allow the same straps, or additional straps, clips or bands, to wrap around the wearer's lower leg to secure the lower arms of the elastic cross-strap.

[0061] The upper mounting facility positions the brace assembly about the upper limb of a user's joint. Embodiments of this facility can similarly include those possible for the lower mounting facility. In the embodiment shown in FIG. 1, the upper arms of the elastic cross-strap are configured to connect to each other and perform the function of the upper mounting facility 140, much like a thigh pad in a traditional knee brace. In this embodiment, the thigh side connection is made by connectors 146 A and 146 B on the end of the upper arms extending up the wearer's thigh. As shown, this connection is made by complementary hook and loop type Velcro fasteners on the thigh end of the straps but any connection means can be used such as but not limited to complementary hooks, buttons, buckles, slots, loops, adhesives or clips. In this embodiment, the thigh end of the straps can provide the functionality of a thigh cuff in traditional knee braces by wrapping the straps around the wearer's thigh to help secure the assembly to the thigh. In the embodiment shown, sections of the upper arms also contain optional facility attachment elements defining a facility attachment point 142 that allows the upper arms to attach to the upper mounting facility in particular places such as the anterior position shown. Examples of attachment element can include all those possible for the lower mounting facility. In one embodiment, the attachment elements comprise matching Velcro sections attached on the upper arms of the elastic cross-strap. These sections are placed on the elastic cross-strap arms 162 and 164 in pre-determined locations that will allow proper positioning of the elements and help ensure the attachment can be maintained anterior to the limb and towards a front portion of the mounting facility.

[0062] For the embodiment of FIG. 1, the attachment point 142 functions generally as an upper anterior resistance point and a point generally mid- way between the lower attachment points functions as the lower anterior resistance point.

[0063] In embodiments where the upper mounting facility comprises a thigh pad, as shown in FIG. 2, the thigh pad 240 can comprise any non-rigid material that can engage the wearer's thigh and attach this pad to other elements of the assembly. Suitable materials for this pad include but are not limited to cloth, cotton, plastic, nylon, mesh and leather. This pad may further include padding or may be heat pliable, molded or contoured to be more comfortable for the wearer. The embodiment in FIG. 2 illustrates one embodiment of an anterior thigh pad 240 which can be shaped to the contour of the medial anterior thigh above the vastus medialis oblique.

[0064] FIG. 2 also shows that embodiments of the assembly 200 can include a lower mounting facility 220 having a tibial pad 221 with similar mechanical characteristics as the thigh pad 240.

[0065] In embodiments, as shown in FIG. 2, the mounting facilities 220 and 240 include at least one securing strap 224 and 244 operably connected to the facilities to secure them onto the wearer's limbs. Any means to secure the pads and tighten the pads onto the wearer's body is suitable. In one embodiment, a Velcro type securing strap is attached to each of the pads and when the strap is secured to the pad around the wearer's limb, the pads are secured to the wearer. Other suitable means to secure the facilities to wearer's limbs include but are not limited to a sleeve around the limb and straps with adjusting facilities such as buckles.

[0066] It is contemplated that in some embodiments, rather than connecting the elastic cross-strap 260 to the pads, the securing straps 224 and 244 can also provide the attachment means for the pads to the elastic straps. For example, the securing strap may wrap all the way around the limb and have the attachment means so that when the securing strap is secured to the pads, the elastic cross-straps are attached to the securing strap.

[0067] The elastic cross-strap 260 is attached to the upper and lower mounting facilities at upper and lower facility attachment points 242 and 222. This attachment can be made using any means that will secure the ends of the elastic cross-straps onto the mounting facilities and is generally made at a front portion of the mounting facility. As shown in FIG. 2, the elastic cross-strap arms are permanently attached to the attachment points 242 and 222 on the facility front portions 248 and 228 by rivets at strap attachment points 276 and 286. Attachment means includes any of the attachment means already described. If the thigh pad is not used, the elastic cross-straps can be wrapped around the wearer's thigh and connected to themselves to secure the assembly to the wearer.

[0068] For the embodiment of FIG. 2, the attachment points 242 and 222 function generally as the upper and lower anterior resistance points respectively.

[0069] FIG. 2 also illustrates the adjusting facilities that can be used to adjust the length of the elastic cross-strap. By adjusting the length of the elastic cross-strap, the elastic tension and resistive properties of the cross-strap can be adjusted. Adjustment element 278 comprises a buckle that allows the arms 272 and 282 of the elastic cross- strap to be put through the buckle and adjusted. (An adjusting facility on the other side of the brace can be provided but is not shown.) Examples of suitable adjusting facilities include but are not limited to buttons, Velcro, snaps or hooks or any type of adjustable connections that allows a connection that can alter the length or resistance properties of the elastic cross-strap. It is understood that providing elastic cross-straps of varying length is also another example of a suitable adjusting facility.

[0070] In embodiments of this brace assembly, it is beneficial for the elastic cross-strap to provide a sufficient resistance force to an extension of the limbs about a joint at or near an anterior point of the wearer's leg. This resistance force is applied to the limbs about a joint by resisting an extension of elements of the brace itself between the cross origin and the anterior resistance points. By resisting the extension of elements of the brace, such as the anterior resistance points about the cross origin, elements of the brace are able to help limbs resist their extension about the bending axis of the joint. The bending axis of the joint is the actual or conceptually equivalent point of the joint about which the limb portions bend or rotate. When the cross origin is positioned posterior to the joint, which is posterior to the joint's bending axis, this typically means that the anterior resistance point is preferably positioned anterior to the joint at a front portion of the mounting facilities. The anterior resistance point is typically the point at which the resistance force is applied to the brace portion that applies that resistance force to an extension force applied to the brace by the extension of the limbs. In most, but not necessarily all embodiments, the anterior resistance point is the same as the attachment points. For example, as represented in FIG. 3 A and 3B, this assembly benefits from a configuration that maximizes the tensile force that the elastic cross-straps can provide. In FIG. 3A, the lines 372 and 382 represent the upper and lower elastic cross-strap arms respectively of an elastic cross-strap and the points 376 and 386 represent their strap attachment points and point 366 represents the cross origin. In the embodiment illustrated, the cross origin 366 would be posterior to the joint bending axis. The attachment points represent examples of the upper and lower anterior resistance points from which the cross-strap provides the resistive force that counters the extension force caused by a joint extending. The line 309 generally represents the front part of the wearer's leg. Using the upper strap attachment point 376 as an example, the resistance force Fl that upper elastic cross-strap upper arm 372 provides at the upper anterior resistance point can be translated into FlsubX and FlsubY forces as shown. Using trigonometric and static principals, the angle Al allows the force to be translated in the X direction as FlsubX=Fl (sinAl). As compared to FIG. 3B, where the angle Alprime of the elastic cross-strap arm 372 to 309 is less than Al, the resistance force FlsubX to be applied is less. Therefore, as designed, the attachment of the elastic cross-strap onto the brace assembly towards the anterior, or front portion of the brace, provides more resistance than known prior art brace assemblies with straps that provide predominantly posterior resistance points and smaller angles at Al. This positioning also reduces the force that would otherwise be put on the brace in the direction of Flsuby. By reducing this force, the forces that would tend to cause the brace mounting facilities to migrate towards each other are reduced. [0071] The resulting angles shown in FIGS. 3 A and 3B will vary for each patient given their size, strength in order to control extension of the joint. In some embodiments of the brace assembly, the angle from the lower attachment point and upper attachment point about the cross origin (FIG. 3A angle Bl) can be in a range of about 50 to 160 degrees, 60 to 140 degrees or 75 to 115 degrees.

[0072] In addition to providing superior resistance properties, embodiments utilizing an elastic cross-strap also provide the benefit of eliminating the hard stop typical of prior art embodiments that use hard stop features such as in a hinge or with a non- elastic strap. This lack of a hard stop helps prevent migration of the brace and reduces the jerking feeling making the brace more comfortable for the wearer. The inclusion of providing progressive resistance with the elastic cross-strap provides additional benefits. The elastic properties of the cross-strap can provide resistive properties earlier in the motion arch of the joint thereby controlling extension sooner. Additionally, the elastic properties can provide increasing resistance in a linear fashion as the joint goes from flexion to extension which increases neuromuscular control and causes the extensor muscles to gradually strengthen which is good for joint stability.

[0073] Other Embodiments of the Hyperextension Brace: [0074] One embodiment of the brace assembly comprises a single elastic cross- strap mounted in a way that provides the functionality of the brace. As shown in FIGS. 4A and 4B, this embodiment comprises a single elastic cross-strap 460 that is wrapped around the wearer's shin 402 to create the lower mounting facility 420, the arms of the elastic cross-strap are then wrapped behind the knee to cross in the popliteal fossa of the knee to create the cross origin 466. The arms are then extended and wrapped around the wearer's thigh 404 to create the upper mounting facility 440.

[0075] In this embodiment of the brace assembly 400, the wrapping around the shin 402 may start with the middle of the elastic cross-strap 460 being placed in the back of the calf. The wrapping can continue around the lower leg once or multiple times. At the point that the elastic cross-strap is extended from a position anterior to the shin and then up behind the knee. There may be elements to help define the strap attachment points 486 to assist in keeping the arms of the cross-strap properly positioned anterior to the joint. The wrapping around the thigh 404 may also be done once or multiple times with attachment means such as hooks, bands, buttons, buckles, loops, clips, Velcro or straps to keep the straps together and define the strap attachment point 476. To close the elastic cross-strap, any connection means already disclosed, such as complementary hook-and-loop (Velcro) connectors can be used to secure the upper arms to each other. For the embodiment illustrated in FIGS. 4A and 4B, the strap attachment points 476 and 486 function generally as the upper and lower anterior resistance points respectively.

[0076] Although the embodiment in FIGS. 4A and 4B illustrate an embodiment of a single strap with two free ends, embodiments of one single strap in a loop are contemplated that can similarly be used as the brace assembly.

[0077] One embodiment similar to that in FIGS. 4A and 4B is shown in FIG. 10. This embodiment comprises a wrap material such as latex or latex-free Esmark Wrap sold by Medline Industries of Mansfield Massachusetts being used as the hyperextension cross-strap. The wrap 1060 is positioned about the joint as described with the embodiment shown in FIGS. 4A and B and secured about the wearer's leg by any type of securing means such as an adhesive tape 1012, securing the wrap to itself by wrapping it around the leg in multiple layers or by having a multiple property elastic cross-strap that allows the strap to adhere to itself.

[0078] Another embodiment of the brace assembly utilizes a single elastic x-strap as the elastic cross-strap. As shown in FIG. 5, the assembly 500 has a single elastic x- strap 560 having a cross origin 566, upper arms 572, lower arms 582 and attachment points (shown in FIG. 6 as fasteners 673 and 683). This elastic x-strap functions similar to the crossed single elastic cross-strap. As shown, elastic the x-strap arms have Velcro fasteners that act as adjustment elements 578 and 588 on their end. These ends connect through loops 579 that are attached to Velcro fasteners (not shown) on both the upper and lower mounting facility. Adjustment element 578 is able to be pulled through the loops 579 and secured to itself at different positions creating arms of different lengths. In one embodiment, this elastic x-strap is long enough to extend from the anterior tibia at the patellar attachment and wrap posteriorly with one arm wrapping medial and one wrapping laterally to attach to the wearer's anterior thigh pad. This elastic "X-strap" configuration creates arms running from an anterior tibial pad with one strap medial and one strap lateral to cross like an X in the popliteal fossa of the knee, then coming back to an anterior thigh pad in the middle to upper one-third of the thigh.

[0079] Similarly, embodiments having two elastic straps can be made where two elastic straps are used to create the elastic cross-strap.

[0080] Embodiments of a brace assembly also include having a brace sleeve to provide assembly elements. This type of embodiment is shown in FIGS. 5 and 6. In FIG. 6, the upper and lower portions of the sleeve, 640 and 620 can function as the including the upper and lower mounting facilities respectively. The sleeve in these embodiments will rest against the wearer's skin. The surface of the sleeve that will touch the wearer's skin, the under sleeve, is a non-slick surface to frictionally engage the wearers limb. In the embodiment of FIG. 6, the inner surface of the sleeve 696 comprises an open faced diamond shaped web weave that frictionally engages the skin and also allows portions of the skin surface to be exposed. Other embodiments of the frictional surface of the under sleeve include but are not limited to high friction surfaces such as rubber, felt, mesh or any combination of these surfaces. It is contemplated that under sleeve material can be used so that the under sleeve is in contact with the skin around the knee under the elastic straps to help keep them in place.

[0081] As shown in FIG. 6, embodiments of the brace assembly 600 can include additional fasteners 673 and 683. These fasteners provide the attachment between the upper and lower mounting facilities and the ends of the elastic cross-strap 660 and function as the strap attachment points. With this configuration, the facility attachment points 642 and 622 on the mounting facilities comprises an entire anterior area of the brace having hook-and-loop type fasteners that can match with the under surface of the fasteners 673 and 683. In this configuration, the placement of the fasteners 673 and 683 up and down length of the brace adjusts the effective length of the elastic cross-strap about the wearer's knee. This adjustment can be used in cooperation with the adjustment from the adjustment elements 678 and 688 to adjust the length of the elastic cross-strap. Although these additional fasteners can be a separate element from the elastic cross-strap and the strap arms, they function as an extension of the elastic cross-strap.

[0082] Embodiments of the brace assembly without metallic or rigid elements able to comply with current sporting regulations, such as the FIFA rules.

[0083] The embodiment shown in FIG. 6 also includes optional flexible uprights 697 on one or both sides of the brace. An upright as used in this description is a hinge that has a high degree of axial stiffness and a high degree of bending flexibility. Examples of suitable uprights would be coiled spring cables, chain links or ball-and- socket links, planar struts or flexible struts that prevent the upper and lower mounting facilities from urging towards each other when the assembly is subjected to the forces of the elastic straps. The upright has the capability to bend in one or more planes while not compressing. The upright can be directly connected to the pads, sewn into the sleeve or be attached to other elements that are connected to the pads to keep the pads from urging towards each other. In these embodiments, suitable material for the uprights include, but is not limited to metals, Kevlar or carbon fiber type construction that will provide flexibility but not let the upright compress. Suitable overall shapes for the upright include but are not limited to a flexible rod that easily allows flexing of the knee when the uprights are installed on the wearer's leg.

[0084] Embodiments of the brace assembly can also include traditional knee braces elements such as upper and lower frames with central hinges as well as structures for patellar control. The elastic cross-strap could be added to these assemblies to provide additional support and hyperextension protection. As shown in FIG. 2, the elastic cross- strap 260 can function with a thigh cuff 240 and a tibia cuff 221. The elastic cross-strap crosses behind the knee and the arms attach to the facility attachment points 242 and 222 on the cuffs. The hinge 290 of the brace can be of any type uses with traditional braces to include, but not limited to monocentric hinges, polycentric hinges, flexible uprights or any other hinge commonly used in joint braces.

[0085] Embodiments of the brace assembly can also include an elastic cross-strap with a single rigid side strut and hinge or flexible upright. For example, this type of embodiment could be worn as a prophylactic brace on the lateral side of the knee to reduce knee injuries and reduce the chances of rigid brace elements colliding with each other and interfering with the user's leg movement. In these embodiments, the cross- strap can comprise any of the descriptions included herein and is attached to the side strut or upright using the attachments means disclosed. The single rigid side strut and hinge can be similar to any of the side brace and hinge designs disclosed and the flexible upright can be similar to any of the flexible uprights disclosed in other embodiments with or without a sleeve.

[0086] Additional embodiments of the brace assembly are shown in FIGS. 7, 8 and 9.

[0087] FIG. 7 shows a front view of one embodiment of the brace assembly 700 with the side brace elements 730A and 730B turned forward for illustration. In this embodiment, the upper and lower mounting facilities are defined by upper and lower portions of multiple side brace elements together with connector elements. One side brace element (e.g. medial) comprises an upper portion 732A, a lower portion 734A and a hinge 790A that allow the upper and lower portions to pivot relative to each other. Similarly, the other brace element (e.g. lateral) comprises an upper portion 732B, a hinge 790B and a lower portion 734B. This embodiment cooperates with an elastic hyperextension cross-strap 760 that is attached at various points to the side brace elements. As shown, the lower mounting facility is defined by the lower portion of both side brace elements (734A and 734B) together with the portion of the elastic cross-strap 760 attached to the lower brace portions. In a similar fashion, the upper mounting facility is defined by the upper portions (732A and 732B) of the medial and lateral brace elements cooperating with portions of the attached elastic cross-strap 760.

[0088] The composition of the side brace elements in this embodiment can be of any rigid or semi-rigid material that can engage the side of a wearer' s leg, attach the side elements to the elastic hyperextension cross-strap and provide a degree of rigidity to the assembly when stationary or when the upper and lower mounting facilities pivot about the hinges. Suitable materials include but are not limited to plastics, metals, composites or any combination of these materials. The brace elements may further include padding or may be heat pliable, molded or contoured to be more comfortable for the wearer. As shown (FIG. 8, 837), the side brace element includes an interior pad portion such as but not limited to foam, rubber, cloth, cotton, plastic, leather or any combination of these materials. The pad portion provides a comfortable surface between the more rigid side element portions and the wearer's skin. Side attachment points and on the side brace elements can include any means of attaching the elastic cross-strap to the brace elements. As shown, one embodiment of the side attachment means comprises a series of slots such as 736A and 736B in the side brace elements. In this embodiment, the slots allow the elastic cross-strap to be put into one slot such as 736A and exit another slot such as 739A. This "weaving" of the elastic cross-strap through the side brace element attaches that portion of that elastic cross-strap to that portion of the brace element. Preferably, the side attachment points allow the elastic cross-strap and brace elements to be adjusted for each user. As shown, the weaving of the strap through the brace allows the strap to move within the slots and therefore adjust the position and/or tightening of the brace on a wearer. Although not required, in some embodiments, the attachment means are offset as shown with one means, typically the attachment means posterior to the joint, closer to the brace hinge and the other means, typically the means most anterior, furthest from the brace hinge. This configuration assists in the proper positioning of the cross-strap within the brace and about the joint. Although weaving through slots are shown as an example attachment means in this embodiment, it is understood that any method of attaching the elastic cross-strap to the side brace element is anticipated such as but not limited to hook- and-loop fasteners, hooks, buttons, clips, adhesives or any other attachment or connection means. When using the side brace elements, the side attachment points between the brace elements and the elastic cross-strap do not always coincide exactly with the configurations of attachment points as described above and shown in FIGS. 1, 2, 4, 6 and in particular FIG. 3. It is understood that with side brace embodiments, the resistance to hyperextension can still be performed by the elastic cross-strap that is wrapped around the front portion of the wearer's leg. In configurations that have attachment points about the side of side brace elements and the strap wraps around the limb, the elastic cross-strap defines an anterior resistance point that will typically lie somewhere about half-way between the elastic cross-straps attachment to one brace element and the other (for example, between 739 A and 739B). It is from this anterior resistance point of the elastic cross-strap, that the attachment point and anterior resistance point benefits described in FIGS. 3 A and 3B are gained.

[0089] It is understood that alternative shapes of side braces may be used. For example, and not for limitation, one embodiment shown in FIGS. 1 IA and 1 IB comprises brace assembly 1100 having a single lateral side brace configured with upper and lower paddle shaped side brace elements 1132 and 1134 respectively, extending from the hinge 1190 and hooking towards the anterior side of the brace assembly. In this embodiment, the paddle shape provides some rigidity to the brace assembly while also helping the cross-strap 1160 maintain a beneficial position anterior to the joint providing a better anterior resistance point. Additionally, because only one lateral side brace is used, this can minimize the collision of brace assembly elements that may otherwise occur with rigid or semi-rigid medial side brace elements. In this embodiment shown, the attachment means, such as slot 1139, can be positioned on the end of the paddle so that it will allow both the attachment of the cross-strap coming from the lateral side of the joint, as well as help secure the cross-strap coming from the medial side of the joint. As shown, the slot 1139 is positioned lower on the paddle end so that the cooperation of the paddle end and the cross-strap coming lateral helps position the cross-strap portion going medial from the upper mounting facility so that it is not urged towards the joint when put under tension. The same type of configuration can be used on the lower paddle as shown. It is understood, that other means to guide the cross-strap at the ends of the paddles can be used such as but not limited to ridges, multiple slots, channels, rings or other attachment means. For example, in one embodiment, the distal ends of the paddles can have two open slots that are dimensioned to allow the cross-strap to be easily put into the slots while the slots help prevent the cross-strap portions in the slots from urging towards the joint when the strap is put under tension.

[0090] The composition of the elastic hyperextension cross-strap is similar to the descriptions described for other embodiments.

[0091] When assembled, as shown in FIG. 8 (with the wearer's knee), embodiments of the brace assembly function similar to the embodiments describe herein. The upper mounting facility is shown generally as 840 and the lower mounting facility is shown generally as 820. The upper portions (832A and 832B) and lower portions (834A and 834B) of the brace elements can pivot about the hinges 890. A portion of the elastic cross-strap (860B) wraps around the front of the wearer's leg about the thigh, another portion of the elastic cross-strap (860A) wraps around the front of the wearer's leg about the tibia and the elastic cross-strap crosses behind the knee creating a cross-origin 866. The side brace elements help keep the position of the elastic cross-strap as well as provide some rigidity to the assembly.

[0092] Shown in FIGS. 7 and 8, an optional securing strap 838 can be strapped around the wearer's leg to help secure the brace assembly on the leg. The securing strap is secured to both of the side brace elements at a securing point and can include a buckle 839 or other means to connect the ends of the securing strap. It is understood that securing straps can be used on either the upper or lower portions or both portions. The securing strap may also be used around the front of the wearer's leg if necessary and can be positioned at various locations between the hinge and the distal end of the brace portions.

[0093] In one embodiment shown in FIG. 9, the brace assembly 900 with side brace elements can be integrated with embodiments similar to those shown in FIGS. IA and IB. As shown in FIG. 9, a shin shell 921 can be attached to portions of the elastic cross-strap 960 so that the shin shell provides some protection to the shin of the wearer. As shown, the upper shaped edge 927 of the shin shell in embodiments can be shaped to align with the exterior shape of the tibial tubercle of the knee. As described above, the shin shell can also be made of a flexible material or when desired, it can made of more rigid material to provide some tibial protection to the wearer.

[0094] One embodiment of the brace assembly further comprises configuring the tibial pad to function as an endo- skeleton such as with a wearer's shin guard, as may be required in a sport such as soccer, to support anterior tibia and anterior drawer control. FIG. 9 shows the shin shell attached to a shin guard 929.

[0095] Although not necessary, it is contemplated that some embodiments of the assembly can be capable of being integrated with a patellar control-open patellar donut as prescribed. In these embodiments, the assembly may include straps for patellar subluxation that stabilizes the elastic cross-strap or hinges.

[0096] Although not necessary, in some embodiments of the assembly, the assembly further includes a covering that can be decorative and/or can provide a sleek/smooth surface for the wearer.

[0097] Although the above description and terminology of the components of the embodiments above utilize the terminology of a knee, it is understood and contemplated that the assembly can be applied to other joints. For example, one embodiment of the assembly can be used with a person's elbow joint.

[0098] One Embodiment of the Hyperextension Brace Assembly in Operation: [0099] One embodiment of the disclosed inventions will be used to further illustrate the operational aspects of the invention. Although the embodiment discussed utilizes an assembly embodiment with a shin shell as the lower mounting facility, it is understood that embodiments of the invention can be applied to an assembly without a shin shell. For those other embodiments, such as shown in FIG. 5, the attachment of the straps on or around the wearer's thigh in a sleeve provides many of the same functions as the upper mounting facility described below.

[00100] One embodiment of the invention, as shown in FIGS. IA and IB, is used about a wearer's knee 105. The brace assembly 100 is initially secured on the wearer's shin 102. This is done by securing the shin shell 121 on the shin 102 and wrapping the securing straps 124 around the calf. This securing is done at a point of that calf such that the movement of the shell towards the knee is minimized. Once secured on the shin, the elastic cross-strap arms 162 and 164 are wrapped behind the knee creating an x-pattern as the cross origin 166 in the popliteal fossa of the knee and then wrapped anterior and around the thigh. Connectors 146A and 146B, such as Velcro, of the strap arms 162 and 164 are secured to each other forming the upper mounting facility 140. The upper arms of the cross-strap are attached to matching Velcro fasteners on the cross- strap such that they create facility attachment point 142 anterior on the thigh. As with the shin shell 121, the placement of the upper mounting facility 140 is done to minimize the movement of the facility towards the knee 105.

[00101] Once secured on the thigh 104 and the tibia, the presence of the elastic straps in the X configuration helps prevent the knee from hyperextension. Hyperextension is prevented by the cooperation of the secured ends of the straps with the positioning of the straps behind the knee. The elastic properties of the cross-strap can provide resistive properties early in the motion arch of the joint thereby help control extension early in the motion arch. As the joint extends, the elastic straps stretch and provide progressively more resistance. When the knee reaches a desired limit, the elastic straps reach a significant resistance level that prevents further extension. This resistance does not provide a hard stop of the extension. By not having a hard stop, brace migration is minimized as well as the discomfort caused by sudden jerking of the brace when the hard stop if reached. Additionally, this resistance approach uniquely provides therapeutic benefits such as increasing neuromuscular control and causing the extensor muscles to gradually strengthen which is beneficial for joint stability.

[00102] The point of attachment, facility attachment points 142 and 122, of the elastic straps and the thigh and tibial pad respectively are such that the desired resistance provided by the anterior resistance points allow proper knee movement but prevents hyperextension. Additionally, if the brace assembly 100 has good frictional contact with the skin, rotational support of the knee joint is also provided. As the wearer uses the brace assembly, and as their need for support and/or comfort changes, the elastic straps can be tightened or loosened to change the elastic tension on the system by simply removing and reattaching the straps with the Velcro attaching means.

[00103] The embodiment of FIG. 4 operates similar to FIG. 1. In this embodiment, the elastic cross-strap 460 is used to function as both the lower mounting facility 420 and the upper mounting facility 440. This can start with the elastic cross- strap being initially wrapped around the shin 402 of the wearer and crossing the arms around each other anterior to the shin. Once secured on the shin 402, the same methods described for FIG. 1 can be followed to mount the brace assembly on the knee. In this embodiment, the anterior resistance points are at points of the elastic cross-strap at the front of the wearer's thigh and shin such as at strap attachment points 476 and 486.

[00104] The embodiment of FIG. 10 operates similar to the embodiments described for FIGS. 1 and 4.

[00105] Other Embodiments of the Hyperextension Brace Assembly in

Operation:

[00106] The embodiments of FIGS. 2, 5 and 6 operate in a similar manner to those shown in FIGS. 1 and 4. With the embodiments of FIGS. 2, 5 and 6, the upper and lower cuff or the sleeve is mounted around the knee and the cross-strap is attached to the attachment points and adjusted. The elastic cross-straps can be adjusted so that the length of the upper and lower arms between the attachment points is made longer or shorter depending on the person wearing the brace assembly and the desired tension. In embodiments, the uprights can be contained within the under sleeve or other covering that connects the hinges to the upper and lower pad. The placement of the uprights maintain the relative distance between the upper and lower pad and therefore helps maintain the resistance and support provided by the elastic straps.

[00107] The embodiments of FIGS. 7-9 operate similar to those in FIGS. 1 and 4. With the embodiments of FIGS. 7-9, the elastic cross-strap can already be attached through the slots in the brace elements or it can be attached as part of putting the brace on by the wearer. The wearer puts their leg between the cross origin of the elastic cross-strap and the portions of the elastic cross-strap that become positioned on the front of the wearer's leg. The brace assembly is positioned so that the upper mounting facility is positioned above the joint and the lower mounting facility is positioned below the joint. The elastic cross-strap is then adjusted with respect to the side attachment points by sliding the strap in and out of the slots. If necessary, the connectors on the end of the strap are unconnected to allow more adjustment of the strap. Once adjusted, the connectors are secured to each other so that the brace assembly is secured around the wearer' s leg about the joint and provides the adequate amount of tension. If provided, the securing strap can be adjustably connected by a buckle to help further secure the brace on the wearer's leg. Once secured, the upper mounting facility is able to pivot about the hinge while the cooperation of the cross-origin with other portions of the elastic cross-strap help prevent the wearer's knee from hyperextension.

[00108] With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention.

[00109] Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention. Although this invention has been described in the above forms with a certain degree of particularity, it is understood that the present disclosure has been made only by way of example and numerous changes in the details of construction and combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention.

Claims

CLAIMS:We claim:

1. An elastic brace assembly comprising: an elastic cross-strap forming an upper mounting facility and a lower mounting facility; and the elastic cross-strap further forming a cross origin between the upper and lower mounting facilities whereby the cross-strap provides a resistance force to an extension of the upper mounting facility and the lower mounting facility about the cross origin when the cross origin is positioned posterior to the user's joint.

2. The elastic brace assembly of claim 1 wherein the elastic cross-strap further comprises at least one portion forming a strap arm extending from the cross origin to at least one upper anterior resistance point and at least one portion forming a strap arm extending from the cross origin to at least one lower anterior resistance point.

3. The elastic brace assembly of claim 2 wherein the upper and lower anterior resistance points are portions of the strap arms capable of applying the resistance force to the extension of the upper and lower mounting facility about the cross origin.

4. The elastic brace assembly of claim 2 wherein the elastic cross-strap comprises an elastic bandage whereby the bandage can be wrapped around a jointed limb of the user both above and below the joint to create the upper and lower mounting facilities respectively, portions of the elastic bandage wrap form at least two strap arms from the lower anterior resistance point, one strap arm wraps lateral and one strap arm wraps medial to cross behind the knee in an x-pattern as the cross origin and the strap arms continue from the cross origin to wrap anterior to the upper anterior resistance point with one strap arm wrapping lateral and one strap arm wrapping medial.

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5. The elastic brace assembly of claim 2 wherein the elastic cross-strap comprises at least two strap arms extending from the cross origin to both the upper and lower anterior resistance points.

6. The elastic brace assembly of claim 2 wherein the elastic cross-strap comprises at least two strap arms extending from the lower anterior resistance points to the upper anterior resistance points and crossing at the cross origin.

7. The elastic brace assembly of claim 2 wherein the upper anterior resistance point comprises a portion of the upper mounting facility and the lower anterior resistance point comprises a portion of the lower mounting facility.

8. The elastic brace assembly of claim 7 wherein: the elastic cross-strap further comprises at least two arms extending from the lower anterior resistance points to the upper anterior resistance points and crossing at the cross origin; the upper mounting facility further comprises an upper portion of a side brace; and the lower mounting facility further comprises a lower portion of the side brace whereby when the upper and lower anterior resistance points are positioned anterior to a thigh and shin of the wearer respectively and the cross-origin is positioned posterior to a knee joint of the wearer, the elastic cross-strap provides the resistance force to the extension.

9. The elastic brace assembly of claim 8 wherein the upper and lower portions of the side brace are connected by a hinge.

10. The elastic brace assembly of claim 8 wherein the upper and lower portions of the side brace are connected by a flexible upright.

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11. An elastic hyperextension brace assembly comprising: at least one side brace element having an upper and lower brace portion; an elastic cross-strap; and the elastic cross-strap attached to each of the side brace elements whereby the elastic cross-strap is capable of providing a resistance force to an extension of the upper and lower brace portions about a joint bending axis when the side brace elements are mounted about the bending axis.

12. The elastic hyperextension brace assembly of claim 11 wherein: the elastic cross-strap forms a cross origin posterior to the bending axis; and the elastic cross-strap further comprises at least two strap arms extending from the cross origin to an upper anterior resistance point and at least two strap arms extending from the cross origin to a lower anterior resistance point.

13. The elastic hyperextension brace assembly of claim 12 wherein the upper and lower anterior resistance points are portions of the strap arms capable of applying the resistance force to an extension force on the brace assembly about the bending axis.

14. The elastic hyperextension brace assembly of claim 12 wherein: each upper and lower portions attach to the elastic cross-strap to define a upper and lower mounting facility respectively; and the upper and lower anterior resistance points are defined as portions of the strap arms providing the greatest resistance force to the extension of the brace assembly about the bending axis.

15. The elastic brace assembly of claim 14 wherein the upper and lower portions of the side brace are connected by a hinge.

16. The elastic brace assembly of claim 14 wherein the upper and lower portions of the side brace are connected by a flexible upright.

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17. A method of supporting a wearer's joint, the method comprising the steps of: securing a first portion of an elastic cross-strap about one limb portion joined to a second limb portion at a user's joint; positioning the elastic cross-strap about the joint to form a cross origin posterior to the joint; and securing a second portion of the elastic cross-strap about the second limb portion at the joint whereby the elastic cross-strap is capable of providing resistance to an extension of the user's limb portions about the joint.

18. The method of claim 17 wherein the step of positioning the elastic cross-strap further comprises positioning at least two strap arms extending between at least one anterior resistance point on both the first portion and the second portion of the elastic cross-strap.

19. The method of claim 18 wherein the joint is a knee joint.

20. The method of claim 19 wherein the step of positioning the elastic cross-strap further comprises: positioning at least one strap arm from the first portion of the elastic cross-strap lateral behind a knee joint and medial to the second portion of the elastic cross- strap; positioning at least one strap arm from the first portion of the elastic cross-strap medial behind the knee joint and lateral to the second portion of the elastic cross- strap; and the strap arms crossing behind the knee joint in an x-pattern as the cross origin in the popliteal fossa of the knee joint.

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