CN209574810U - A knee joint osteotomy system with calibration function - Google Patents

Abstract

The utility model relates to the field of orthopedic surgical operating instruments, and provides a knee joint osteotomy system with a calibration function, comprising left and right connecting plates, distal and proximal transverse connecting rods, a tibial force line rod, a tibial osteotomy body and a femur Osteotomy body; the left and right connecting plates are connected in parallel by the distal and proximal transverse rods, the scales are marked on the distal and proximal transverse rods, and the tibial force line rod is connected to the distal and proximal transverse rods through the slider, One of the tibial osteotomy body and the femoral osteotomy body is detachably connected to the proximal end of the tibial force line rod, the proximal ends of the left and right connecting plates are provided with angle plates, and the femoral osteotomy body includes a separation balance structure. The system of the utility model can directly complete the key steps of tibial plateau osteotomy, posterior femoral condyle osteotomy, distal femoral osteotomy and other key steps in the knee joint replacement of the posterior stabilized prosthesis, thereby improving the accuracy of tibial osteotomy and femoral osteotomy .

Description

A knee joint osteotomy system with calibration function

technical field

The utility model relates to the field of orthopedic surgical operating instruments, in particular to a knee joint osteotomy system with a calibration function.

Background technique

Total knee arthroplasty is an effective treatment for advanced knee osteoarthritis. It mainly includes: measurement osteotomy technique and gap balance technique. Regardless of the technique used for total knee arthroplasty, the balance of the knee flexion-extension gap and the medial-lateral gap is the ultimate goal.

To measure the osteotomy technique, the rotational osteotomy of the articular surface of the posterior femoral condyle was performed with reference to the 3° angle of external rotation of the posterior femoral condyle line, the transcondylar line, and the anterior-posterior axis of the femur. Instead of maintaining 3° of internal rotation, in addition to femoral condyle hypoplasia, deformity, and inaccurate intraoperative identification, femoral rotation osteotomy will be inaccurate.

The basic requirement of the gap balance technique is to release the soft tissue first and then perform the osteotomy of the anterior and posterior condyle articular surfaces of the femur. During the operation, the tibial and femoral osteotomies are divided into the flexion-gap priority method and the knee-extender gap-first method. Among them, the flexion-gap gap priority method is more Commonly used, that is, after exposing the knee joint, perform accurate osteotomy of the proximal tibia perpendicular to the tibial line, then release the soft tissue and remove the osteophytes, bend the knee 90°, and try to make the osteotomy surface of the tibial plateau parallel to the transcondylar line under tension. To determine the rotation of the femur, perform posterior condylar osteotomy with reference to the proximal articular surface of the tibia to obtain an equal flexion joint space between the medial and lateral sides; then straighten the knee, mark the knee extension gap with reference to the medial-lateral balance obtained when the knee is flexed, and perform Osteotomy of the distal femur to obtain a balanced flexion-extension gap between the medial and lateral sides.

Many domestic and foreign clinical studies have confirmed that the gap balance technology can improve the stability of knee flexion and increase the service life of the prosthesis. Accurate medial and lateral soft tissue balance and accurate osteotomy are the keys to total knee arthroplasty. Imprecise osteotomy and soft tissue release can lead to complications such as patellofemoral joint instability and anterior knee pain.

However, in order to achieve a balance between flexion and extension, the gap balance technique sometimes increases the osteotomy of the distal femur, which leads to joint line shift and mid-flexion instability, and is not suitable for a few cases with severe knee varus and extensive soft tissue release. Be applicable.

At present, many scholars at home and abroad have studied the combination of measurement osteotomy technology and gap balance technology, in order to reduce the error of surgical operation, improve the accuracy of osteotomy, and improve the surgical effect. Corresponding methods and tools for measuring gap balance emerge in an endless stream, but most of them are designed independently, which are not compatible with the existing osteotomy template, and are not matched, so there is a certain human operation error, and the operation is not very convenient.

SUMMARY OF THE INVENTION

The purpose of this utility model is to overcome the above-mentioned deficiencies in the prior art, to provide a knee joint osteotomy system with a calibration function, in the process of artificial knee joint replacement using a posterior stable prosthesis, improve the tibia Accuracy of osteotomy and femoral osteotomy.

The purpose of the utility model is achieved through the following technical measures.

A knee joint osteotomy system with calibration function, comprising a left connecting plate, a right connecting plate, a distal transverse rod, a proximal transverse rod, a tibial force line rod, a tibial osteotomy body and a femoral osteotomy body; , The right connecting plate is connected in parallel by the distal and proximal transverse links. The distal and proximal transverse links are movably sleeved on the connecting plate, and the two ends are fixed by adjusting bolts. The distal and proximal transverse links are marked with scales. The wire rod is connected to the distal and proximal transverse connecting rods through the slider, and one of the tibial osteotomy body and the femoral osteotomy body is detachably connected to the proximal end of the tibial force wire rod, and the proximal ends of the left and right connecting plates are provided with Angle plate, the slider at the distal end is provided with an adjustment rod, the distal end of the tibial force line rod is sleeved on the adjustment rod, the adjustment rod is provided with an adjustment nut, and the tibial osteotomy body is provided with a transverse tibial osteotomy The groove and the longitudinal perforation of the tibial force line rod, the femoral osteotomy body includes a separation balance structure and a femoral osteotomy groove plate, the separation balance structure is provided with a tibial force line rod perforation, and the femoral osteotomy groove plate is provided with a transverse groove plate. The femoral osteotomy slot and femoral positioning rod perforation.

In the above technical solution, the separation balance structure is composed of an upper separation plate and a lower separation plate, the upper and lower separation plates are connected by screws at the top plate of the top, and the screws pass through the screw holes on the top plate of the lower and lower separation plates and then connect to the upper and lower separation plates. The top plate of the upper separation plate is threadedly connected, and the upper separation plate is a detachable structure, including a top plate connected with the screw, a vertical section and a horizontal section for placing the femoral osteotomy groove plate, the vertical section and the horizontal section pass through The plug-type structure is connected, the horizontal section can rotate around the plug, and one end of the lower separation plate is sleeved on the tibial force line rod. When in use, the upper separation plate can be lifted or lowered by rotating and adjusting the screw, so that the horizontal sections of the upper and lower separation plates can be separated. During the separation process, it gradually approaches the proximal surface of the upper separation plate.

In the above technical solution, a retractable mechanical axial line rod is provided, and the distal end of the mechanical axial line rod is sleeved on the adjustment rod.

In the above technical solution, the tibial alignment rod is provided with at least three perforations for the fixation of bone pins, of which at least two holes can be fixed to the tibia, and at least one hole can be fixed to the femur (to be fitted with a femoral osteotomy groove). board). After adjusting the position of the tibial force line rod, it is temporarily fixed on the tibia with a bone needle, and the left and right connecting plates, the distal and proximal transverse rods, etc. can be removed.

In the above technical solution, the upper separation plate of the femoral osteotomy body is provided with a balance pointer, which is used to check whether the left and right forces of the upper separation plate are consistent after separation.

In the above technical solution, a skin patch is provided on the distal transverse link and the proximal transverse link. After attaching the skin patch to the skin, tighten the bolts on the skin patch, and determine the distance from the center of the knee joint and ankle joint to the skin on both sides based on the preoperative images, and then adjust the tibial alignment rods through the sliders respectively. The position of the distal end corresponds to the center of the ankle joint, and the proximal end corresponds to the center of the knee joint.

Compared with the prior art, the knee joint osteotomy system with calibration function of the utility model has the following advantages:

1. Adjust the scale for the position of the tibial alignment rod, thereby improving the accuracy of the placement position of the tibial alignment rod; adjust the scale for the posterior inclination angle of the tibial osteotomy, thereby improving the accuracy of the tibial osteotomy.

2. The gap to be cut can be easily estimated and checked before the femoral osteotomy.

3. The osteotomy template system of many manufacturers (for the post-stabilized prosthesis) can be checked conveniently and relatively accurately before osteotomy, reducing human evaluation and operation errors.

4. A set of systems can directly complete the key steps of tibial plateau osteotomy, posterior femoral condyle osteotomy, and distal femoral osteotomy in knee arthroplasty with posterior stabilized prosthesis.

Description of drawings

FIG. 1 is a schematic diagram of the device of the present invention for installing the tibial osteotomy.

FIG. 2 is a front view of FIG. 1 .

Figure 3 is a schematic diagram of the utility model in which the tibial force line rod is sleeved on the adjusting rod.

FIG. 4 is a schematic diagram (top view) of the slider on the proximal transverse link in the utility model.

5 is a schematic diagram of the tibial osteotomy in the present invention.

Figure 6 is a rear view of the femoral osteotomy body in the present invention.

Figure 7 is a side view of the femoral osteotomy body in the present invention (the upper separation plate is separated from the separation balance structure).

Figure 8 is a side view of the femoral osteotomy body in the utility model (the upper separation plate is combined with the separation balance structure).

FIG. 9 is a schematic diagram of the device of the present invention after the femoral osteotomy is installed.

Figure 10 is a schematic view of the femoral osteotomy body at 0 degrees of straightening after passing through the femoral positioning bone pin (for the convenience of structure illustration, the part of the structure that blocks the line of sight in the separation balance structure is omitted).

Figure 11 is a schematic diagram of a hydraulic or pneumatic spreading device between the upper and lower separating plates in the utility model.

FIG. 12 is a schematic diagram of a pneumatic expansion device with a pressure indicator in the present invention.

Among them: 1. Left connecting plate, 2. Right connecting plate, 3. Distal transverse rod, 4. Proximal transverse rod, 5. Tibial force line rod, 6. Measuring slider, 7. Skin patch, 8 .Angle plate, 9. Bone needle perforation, 10. Mechanical axial line rod, 11. Adjusting rod, 12. Adjusting nut, 13. Snap ring, 14. Tibial osteotomy groove, 15. Tibial force line rod perforation, 16 .Femoral osteotomy slot, 17. Perforation of femoral positioning rod, 18. Upper separation plate, 19. Lower separation plate, 20. Screw, 21. Tibial tray attachment plate, 22. Balance pointer, 23. Bone needle, 24. Upper separation plate, 25. Lower separation plate, 26. Guide rod, 27. Hydraulic or air pressure balance device, 28. Airbag, 29. Inflatable rubber ball, 30. Pressure indicator.

Detailed ways

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation disclosed below. .

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in Figures 1 to 10, this embodiment provides a knee joint osteotomy system with a calibration function, including a left connecting plate 1, a right connecting plate 2, a distal transverse link 3, a proximal transverse link 4, Tibial force line rod 5, tibial osteotomy body and femoral osteotomy body; the left and right connecting plates are connected in parallel by the distal and proximal transverse links, the distal and proximal transverse links are movably sleeved on the connecting plates, and the two ends are adjusted by adjusting Fixed with bolts, scales are marked on the distal and proximal transverse links, the tibial force line rod 5 is connected to the distal and proximal transverse links through the measuring slider 6, and the measuring slider of the proximal transverse link passes through the snap ring 13 It is connected with the tibial force line rod 5, which is convenient for the connection or disassembly of the tibial bone force line bar. The tibial osteotomy body and the femoral osteotomy body are selected to be detachably connected to the proximal end of the tibial force line bar, and the left and right connecting plates are near the An angle plate 8 is provided at the end, an adjusting rod 11 is provided on the measuring slider at the distal end, the distal end of the tibial force line rod is sleeved on the adjusting rod 11, and an adjusting nut 12 is provided on the adjusting rod 11. The tibia osteotomy A transverse tibial osteotomy groove 14 and a longitudinal tibial force line rod perforation 15 are opened on the body, and the femoral osteotomy body includes a separation balance structure, a femoral osteotomy groove plate, and a transverse femoral osteotomy groove plate is opened on the femoral osteotomy groove plate. Bone slot 16 and femoral positioning rod perforation 17. The separation balance structure is composed of an upper separation plate 18 and a lower separation plate 19. The upper and lower separation plates are connected at the top plate of the top by a screw 20, and the screw 20 passes through the screw hole on the top plate of the lower separation plate and is connected to the upper separation plate. The top plate is threadedly connected, and the upper separation plate 18 is a detachable structure, including a top plate connected with the screw, a vertical section and a horizontal section for placing the femoral osteotomy slot plate, the vertical section and the horizontal section are connected by a bolt type. The structure is connected, and the horizontal section can be freely rotated around the pin, so as to adjust the position of the horizontal section, so that the left and right forces of the upper separation plate are consistent during the operation, and one end of the lower separation plate is sleeved on the tibial force line rod. When in use, the upper separation plate can be lifted or lowered by rotating and adjusting the screw, so that the horizontal sections of the upper and lower separation plates can be separated. During the separation process, it gradually approaches the proximal surface of the upper separation plate.

In the above-mentioned embodiment, the bottom of the lower separation plate of the femoral osteotomy is provided with a tibial pedestal attachment plate 21 for positioning, and the arc size of the tibial pedestal attachment plate 21 is consistent with the radian of the tibial osteotomy.

In the above embodiment, a retractable mechanical axial force wire rod 10 is provided, and the distal end of the mechanical axial force wire rod 10 is sleeved on the adjustment rod 11 . Preoperatively, the proximal end of the mechanical axis rod can be adjusted to correspond to the center of the femoral head.

In the above-mentioned embodiment, the tibial alignment rod 5 is provided with at least three perforations 9 for the tibial pin for fixation of the tibial pin, of which at least two holes can be fixed to the tibia, and at least one hole can be fixed to the femur (to be fixed to the femur). Set the femoral osteotomy groove plate). After adjusting the position of the tibial force line rod, it is temporarily fixed on the tibia with a bone needle, and the left and right connecting plates, the distal and proximal transverse rods, etc. can be removed. Further, there are scales on the round bone pins, and the back inclination angle of the tibial alignment rod is recorded through the scales on the two round bone pins.

In the above-mentioned embodiment, the upper surface of the upper separation plate of the femoral osteotomy body is vertically provided with a balance pointer 22, or a scaled hydraulic or pneumatic display device is provided on the upper separation plate, which is used to verify the two balances of the balance structure. Check whether the side distraction force and distraction distance are consistent, so as to check whether the soft tissue tension on both sides is equal.

In the above technical solution, a skin patch 7 is provided on the distal end transverse link and the proximal end transverse link. After attaching the skin patch 7 to the skin, tighten the bolts to secure it, and then determine the distance from the center of the knee joint and ankle joint to the skin on both sides based on the preoperative images, and pass the distal and proximal transverse links on the The measuring sliders respectively adjust the positions of the tibial force line rods so that the distal end corresponds to the center of the ankle joint, and the proximal end corresponds to the center of the knee joint.

When this embodiment is used, it is divided into two steps:

1. Tibial osteotomy

First, place the connecting plate vertically on both sides of the calf, rotate the adjusting bolt at the end of the horizontal link to adjust the distal horizontal link and the proximal horizontal link to the appropriate position, and then stick the skin patch 7 to the skin, Tighten the bolts tightly. Before surgery, X-ray fluoroscopy and other methods can be used to determine the center of the ankle joint and its distance from the outer surface of the inner and outer ankle skins, so as to determine the center of the ankle joint and the scale corresponding to the distal transverse rod, and then the distal transverse rod. The measuring slider 6 above slides until the tibial alignment rod corresponds to the center of the ankle joint, that is, the distal position of the tibial alignment rod is correspondingly adjusted to the center of the ankle joint. Similarly, X-rays can be used before surgery. Methods Determine the center of the knee joint and its distance from the outer surface of the inner and outer skin of the tibial plateau, so as to determine the center of the knee joint and the scale corresponding to the proximal transverse link, and then slide the measuring slider on the proximal transverse link. When the tibial alignment rod corresponds to the center of the knee joint, the proximal position of the tibial alignment rod can be adjusted accordingly until it is located at the center of the knee joint. Finally, the tibial osteotomy is sleeved on the tibial alignment rod. The adjusting nut 12 on the 11 adjusts the position of the distal end of the tibial alignment rod 5 on the adjusting rod to adjust the posterior inclination angle of the tibial alignment rod. The angle plate 8 arranged on the inner surface of the connecting plate and the tibial osteotomy body Corresponding to the tibial osteotomy groove, insert a detection plate into the tibial osteotomy groove 14, and the edge of the detection plate is aligned with the angle plate 8, that is, the angle plate corresponding to the tibial osteotomy can be measured and verified. After the inspection is correct, the tibial osteotomy body is temporarily fixed on the tibia with a bone round needle, the detection plate is taken out, the left and right connecting plates, the distal and proximal transverse rods, etc. are removed, and the tibial osteotomy is performed.

2. Femoral osteotomy

After the tibial osteotomy was completed, the tibial osteotomy was removed, and the femoral osteotomy with a separate balance structure was installed on the tibial alignment rod. During the operation, the separation balance structure can be adjusted at the knee flexion position of 90 degrees. First, the upper and lower separation plates of the separation balance structure are adjusted to a smaller gap. The lower separation plate of the separation balance structure is attached to the tibial osteotomy surface, and the upper separation plate is Located at the distal end of the femoral osteotomy slot plate, the femoral osteotomy slot plate passes through the femoral positioning rod, and the round and rectangular holes on the femoral osteotomy slot plate are compatible with the femoral positioning rod. Moderately separate the femur from the tibia. Under a suitable distraction force (about 20 pounds), rotate the femoral osteotomy slot plate around the pin on the vertical section of the upper separating plate until the distraction force on both sides is equal, and the balance pointer is 22 When the direction is perpendicular to the tibial osteotomy surface, the gaps on both sides are equal, and the soft tissue tension on both sides is equal. At this time, the rotation angle of the femoral osteotomy groove plate and the soft tissue tension on both sides have been adjusted, and the femur can be fixed with screws through the fixing holes. Osteotomy slot plate, and osteotomy of the posterior condyle of the femur. For the operator who prefers to measure the osteotomy, the femoral osteotomy groove plate can also be fixed according to the steps of measuring the osteotomy, and then the rotation angle of the groove plate can be evaluated and verified by the above method. In the same way, the osteotomy of the distal femur can be completed at the position of 0 degrees of straightening, that is, after the tibial osteotomy, osteophyte resection and soft tissue release, the tibial alignment rod 5 is adjusted to be in line with the mechanical axial alignment rod 10. The direction is the same, that is, adjust the tibial alignment rod so that its proximal end is aligned with the center of the femoral head (the distal end is still in the center of the ankle joint), and in this direction, drill the bone needle 23 into the femur vertically through the perforation of the tibial alignment rod. The lower tibial force line rod 5, the femoral osteotomy groove plate is set on the bone circular pin 23, and the femoral positioning rod perforation 17 on the femoral osteotomy groove plate passes through the bone circular pin 23, and the same method as above uses the separation balance structure to separate the femur With the tibia, the femur and tibia are separated in this direction to the proper position, and then the osteotomy of the distal femur is performed.

At the bottom of the lower separating plate of the femoral osteotomy, there is a tibial pedestal attachment plate 21 for limiting, and the radian dimension of the tibial pedestal attachment plate is consistent with the radian of the tibial osteotomy. When the lower separation plate of the separation balance structure is inserted into the gap between the tibia and the femur, the insertion is in place when the tibial tray attachment plate 21 is close to the tibia, which can prevent the rear structure from being damaged due to too deep insertion.

In this embodiment, when the self-contained femoral osteotomy groove plate is not used, the principle of gap balance can be used to verify the direction or angle of the assembled femoral osteotomy plate, or to check the valgus angle of the distal femoral osteotomy. , External rotation angle to check.

According to the surgeon's preference, the distal femoral osteotomy can also be performed at the 0-degree extension position, and then the posterior femoral condyle osteotomy can be performed at the 90-degree knee flexion position.

As shown in FIG. 11, in another embodiment, the separation balance structure is composed of an upper separation plate 24 and a lower separation plate 25, and the upper and lower separation plates pass through the guide rod 26 at the top plate of the top

connection, the guide rod 26 is screwed to the top plate of the upper separation plate after passing through the perforation on the top plate of the lower separation plate, and the upper separation plate 24 is a detachable structure, including a top plate connected with the guide rod, a vertical section and a The horizontal section of the femoral osteotomy slot plate is placed, the vertical section and the horizontal section are connected by a pin-type structure, the horizontal section can be rotated around the pin, and one end of the lower separation plate 25 is sleeved on the tibial force line rod 5, the said A hydraulic or pneumatic balancing device 27 with a scale or a pressure indicator is provided between the upper separation plate 24 and the horizontal section of the lower separation plate 25 . When in use, the hydraulic or air pressure balancing device can be activated to drive the upper separation plate to lift or lower, so that the horizontal sections of the upper and lower separation plates can be separated. After being separated to an appropriate position, the distal surface of the femoral osteotomy groove plate can be gradually approached with the proximal end surface of the upper separation plate during the separation process of the upper separation plate and the lower separation plate, and can be balanced by hydraulic pressure or air pressure. Use a pressure indicator attached to the device to use the appropriate distraction force.

As shown in FIG. 12 , an air pressure balancing device with a pressure indicator is arranged between the horizontal sections of the upper separation plate 24 and the lower separation plate 25 . The air pressure balancing device includes an air bag 28 arranged between the horizontal sections of the upper and lower separation plates, an inflatable rubber ball 29 communicating with the air bag, an exhaust valve, etc., and a pressure indicator 30 is also provided.

In yet another embodiment, when the operator does not require precise adjustment of the tension on both sides, the vertical section and the horizontal section of the upper separation plate are fixed in one body.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements or deformations can be made. These improvements or Deformation should also be regarded as the protection scope of the present invention.

Claims (7)

1. a kind of knee osteotomy system of tape verifying function, it is characterized in that: including left connection board, right connection board, the horizontal company in distal end Bar, proximal end tranverse connecting rod, shin bone line of force bar, Tibial osteotomy body and femur osteotomy body；Left and right connecting plate passes through remote, proximal end tranverse connecting rod Parallel connection, remote, proximal end tranverse connecting rod movable set on connecting plate, fixed by adjusting bolt by both ends, on remote, proximal end tranverse connecting rod Scale is indicated, shin bone line of force bar is connected on remote, proximal end tranverse connecting rod by sliding block, and Tibial osteotomy body and femur osteotomy body select one It is removably connected to shin bone line of force bar proximal end, the left and right connecting plate proximal end is equipped with angle scale, and the sliding block of distal end, which is equipped with, to be adjusted The distal end of bar, shin bone line of force bar is socketed on adjusting rod, and adjusting rod is equipped with adjusting nut, is provided with cross on the Tibial osteotomy body To Tibial osteotomy slot and longitudinal shin bone line of force bar perforation, the femur osteotomy body include separation balanced structure, femur osteotomy Frid, the separation balanced structure are perforated equipped with shin bone line of force bar, and the femur osteotomy frid is movably placed in separation balance knot On structure, lateral femur osteotomy slot and the perforation of femur locating rod are provided on femur osteotomy frid.

2. the knee osteotomy system of tape verifying function according to claim 1, it is characterized in that: the separation balanced structure It is made of upper separating plate and lower separating plate, upper and lower separating plate is connected at the top plate at top by screw rod, and screw rod passes through lower separation Be threadedly coupled after screw hole on the top plate of plate with the top plate of upper separating plate, the upper separating plate be detachable structure, including with spiral shell Top plate, vertical section and the horizontal segment for being fixedly connected with femur osteotomy frid that bar connects, the vertical section and horizontal segment pass through Socket type structural is connected, and horizontal segment can be rotated around bolt, and described lower separating plate one end is set on shin bone line of force bar.

3. the knee osteotomy system of tape verifying function according to claim 2, it is characterized in that: the separation balanced structure Upper separating plate on be vertically arranged balance indicator.

4. the knee osteotomy system of tape verifying function according to claim 1, it is characterized in that: the separation balanced structure It is made of upper separating plate and lower separating plate, upper and lower separating plate is connected at the top plate at top by guide rod, and guide rod passes through down It being threadedly coupled after perforation on the top plate of separating plate with the top plate of upper separating plate, the upper separating plate is detachable structure, including Top plate, vertical section and the horizontal segment for placing femur osteotomy frid connecting with guide rod, the vertical section and horizontal segment are logical Cross socket type structural be connected, horizontal segment can be rotated around bolt, and described lower separating plate one end is set on shin bone line of force bar, it is described on The hydraulic or air pressure device for spreading with pressure display unit is equipped between separating plate and the horizontal segment of lower separating plate.

5. the knee osteotomy system of tape verifying function according to claim 1, it is characterized in that: telescopic machinery is arranged The distal end of axle power line bar, mechanical axis line of force bar is socketed on adjusting rod.

6. the knee osteotomy system of tape verifying function according to claim 1, it is characterized in that: on the shin bone line of force bar Equipped at least three perforation fixed for thick steel needle, wherein shin bone can be fixed to through at least two holes, an at least hole is fixed to stock Bone.

7. the knee osteotomy system of tape verifying function according to claim 1, it is characterized in that: the distal end tranverse connecting rod and Proximal end tranverse connecting rod is equipped with skin paste block.