Positioning osteotomy guiding auxiliary device for HTO operation

Abstract

The invention discloses an HTO operation positioning osteotomy guiding auxiliary device, and relates to the technical field of medical instruments, the HTO operation positioning osteotomy guiding auxiliary device comprises a component A, a component B and a component C. The component B and the component C are assembled on the component A in a replaceable mode; the component A is connected with the component B, the component B is provided with at least one group of steel needle guide holes used for guiding steel needles to be placed, a swing saw guide hole parallel to the section where the steel needle guide holes are located and a coronal osteotomy guide hole forming an included angle of 110 degrees with the section where the steel needle guide holes are located, the component A is connected with the component C, and the component C comprises a first fixing part and a second fixing part. The first fixing part and the second fixing part are fixed with the tibia through bone nails, the second fixing part is overturned relative to the first fixing part, and the first fixing part is provided with a protractor for measuring the overturning angle of the second fixing part. According to the device, steel needle implantation, osteotomy, distraction and steel plate installation in the whole HTO operation can be completed, cost is low, and use is convenient.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a positioning osteotomy guiding and assisting device for HTO surgery. Background Art

[0002] HTO surgery, also known as high tibial osteotomy, is to correct the knee joint from valgus deformity to normal alignment.

[0003] During the HTO surgery, the following steps are included: As Figure 1 and Figure 2 shown, first, two steel needles 1 are inserted from the medial side of the proximal tibia to determine the osteotomy plane a. The osteotomy plane a formed by the two steel needles 1 should be parallel to the articular surface b. However, there are difficulties in inserting the steel needles: First, operating by experience, it is difficult to ensure that the osteotomy plane a formed by the steel needles is parallel to the articular surface b in the sagittal plane. Second, it is difficult to accurately maintain a distance of 1.5 cm between the two steel needles near the tibial plateau. As Figure 2 shown, second, a saw is used to perform osteotomy along the extension direction of the steel needles, and then a coronal osteotomy is performed at the tibial tubercle site. The osteotomy plane a of the osteotomy along the steel needle direction forms an angle of 110 degrees with the coronal osteotomy plane c formed by the coronal osteotomy in the sagittal plane. During this process, it is necessary to rely on the operating surgeon to visually observe the angle between the osteotomy plane a and the coronal osteotomy plane c, resulting in inaccurate osteotomy. As Figure 3 and Figure 4 shown, finally, a spreader 2 is used to spread the cut tibia from the incision along the steel needles for correction, and after correction, a Tomofix plate 3 is used for fixation. During this process, the osteotomy plane a is fixed only by one spreader 2, and the entire tibia is less stable, easily causing a change in the posterior inclination angle of the tibia, resulting in inaccurate orthosis and also unable to accurately control the angle of tibial rotation after spreading. Summary of the Invention

[0004] The main purpose of this application is to provide a positioning osteotomy guiding and assisting device for HTO surgery, aiming to solve the above technical problems.

[0005] The technical solution adopted by this application is as follows: A positioning osteotomy guiding and assisting device for HTO surgery includes component A, component B, and component C, and the component B and component C can be replaceably assembled on the component A; The component A and the component B are connected to form a first clamping area for clamping the tibia. The component B is provided with at least one set of steel needle guiding holes for guiding the insertion of steel needles, a saw guiding hole parallel to the cross-section where the steel needle guiding holes are located, and a coronal osteotomy guiding hole with an angle of 110° with the cross-section where the steel needle guiding holes are located; The component A and the component C are connected to form a second clamping area for clamping the tibia. The component C includes a first fixing part and a second fixing part. The first fixing part and the second fixing part are fixed to the tibia by bone nails. The second fixing part rotates relative to the first fixing part to correct the valgus deformity of the tibia to the normal mechanical axis. The first fixing part is provided with a protractor for measuring the flipping angle of the second fixing part.

[0006] Optionally, the component A includes: A connecting part, with a first connecting port and a second connecting port respectively arranged at both ends of the connecting part; A component connecting arm, which is slidably inserted into the first connecting port and fastened by a first locking bolt; A first clamping arm, which is rotatably arranged in the second connecting port along a direction perpendicular to the connecting part and fastened by a second locking bolt.

[0007] Optionally, the component connecting arm includes a long arm strip and a U-shaped connecting head perpendicular to the long arm strip. The long arm strip is inserted into the first connecting port, and both the component B and the component C are connected to the U-shaped connecting head.

[0008] Optionally, the component B includes a second clamping arm, which is arranged opposite to the first clamping arm. One end of the second clamping arm is provided with a first insertion block inserted into the U-shaped connecting head, and the first insertion block is fastened by a third locking bolt.

[0009] Optionally, the second clamping arm is provided with the steel needle guiding hole, the oscillating saw guiding hole and the coronal osteotomy guiding hole.

[0010] Optionally, the first clamping arm and the second clamping arm are provided with arc grooves that fit the tibia.

[0011] Optionally, both the first fixing part and the second fixing part are semi-enclosed arc plates. The first fixing part and the second fixing part are provided with bone nail perforations, and avoidance holes for installing the Tomofix steel plate are also provided on the front surfaces of the first fixing part and the second fixing part.

[0012] Optionally, a cylindrical connecting rod is arranged on the side surface of the first fixing part. One end of the cylindrical connecting rod is inserted into the U-shaped connecting head through a second insertion block and fastened by a third locking bolt.

[0013] Optionally, a connecting plate is rotatably arranged on the cylindrical connecting rod. The other end of the connecting plate is fixedly connected to the second fixing part, and the second fixing part rotates around the cylindrical connecting rod through the connecting plate.

[0014] Optionally, a protractor with damping rotation is further provided on the cylindrical connecting rod, and the connecting plate coincides with the 90° scale line of the protractor in the initial state.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: First: An HTO surgical positioning osteotomy guiding and assisting device proposed in the embodiment of the present application, by cooperating component A and component B, clamping the tibia with component A and component B, guiding the insertion direction of the steel needle through the steel needle guiding hole on component B, so as to ensure that the steel needle is inserted into the tibia at a preset angle, making the osteotomy plane a along the steel needle direction meet the requirements, so that the oscillating saw starts from the oscillating saw guiding hole and osteotomizes along the plane determined by the steel needle, ensuring accurate osteotomy. At the same time, due to the provision of the coronal osteotomy guiding hole at an angle of 110° with the osteotomy plane a, the accuracy of the coronal osteotomy is ensured, solving the defect that it is not accurate enough for the surgeon to observe 110° with the naked eye.

[0016] Second: An HTO surgical positioning osteotomy guiding and assisting device proposed in the embodiment of the present application, by cooperating component A and component C, clamping the tibia with component C and component A, fixing the first fixing part and the second fixing part in component C to the tibia, and having a specific connection relationship between the first fixing part and the second fixing part. Thus, when using the distractor to distract the tibia, the first fixing part and the second fixing part can increase the stability during tibia distraction, avoiding tibia dislocation. At the same time, by using the setting of the protractor, the flipping angle of the second fixing part relative to the first fixing part can be observed, so as to accurately determine the flipping angle during tibia correction.

[0017] Third: An HTO surgical positioning osteotomy guiding and assisting device proposed in the embodiment of the present application, by alternately connecting and using component B and component C with component A, so that a set of devices can meet the use of the entire high tibial osteotomy, with low cost and convenient use. Description of the Drawings

[0018] Figure 1 Schematic diagram of the state when inserting the steel needle during traditional HTO surgery; Figure 2 Schematic diagram of the state when osteotomizing during traditional HTO surgery; Figure 3 Schematic diagram of the state when installing the Tomofix plate during traditional HTO surgery; Figure 4 Schematic diagram of the state after correction during traditional HTO surgery; Figure 5 Schematic diagram of an HTO surgical positioning osteotomy guiding and assisting device proposed in the embodiment of the present application Figure 1 ; Figure 6 Schematic diagram of an HTO surgical positioning osteotomy guiding and assisting device proposed in the embodiment of the present applicationFigure 2 。

[0019] Description of reference numerals in the accompanying drawings: 1 - Steel needle, 2 - Distractor, 3 - Tomofix plate, 4 - Connecting part, 5 - Component connecting arm, 501 - Long arm strip, 502 - U-shaped connecting head, 6 - First clamping arm, 7 - First locking bolt, 8 - Second locking bolt, 9 - Second clamping arm, 10 - Third locking bolt, 11 - First insert block, 12 - Steel needle guiding hole, 13 - Saw guide hole, 14 - Coronal osteotomy guiding hole, 15 - First fixing part, 16 - Second fixing part, 17 - Bone screw perforation, 18 - Cylindrical connecting rod, 19 - Second insert block, 20 - Connecting plate, 21 - Protractor, 22 - Avoidance hole, 23 - Arc groove, 24 - Fibula clamping area, 25 - Fixing screw hole, 26 - Guide plate, 27 - Insert plate, 28 - T-shaped screw. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0022] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0023] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application. Referring to the attached Figure 5 and Figure 6 , the embodiments of the present application provide an HTO surgical positioning osteotomy guiding and assisting device, which includes Component A, Component B, and Component C. Component B and Component C can be replaceably assembled to Component A. Component A and Component B are used in cooperation to guide the guide pin to be inserted into the tibia at the correct angle and ensure accurate osteotomy. Component A and Component C are used in cooperation to stably expand the tibia with the retractor and ensure the correction angle of the tibia.

[0024] Specifically: As Figure 5 shown, Component A includes a connecting portion 4, a component connecting arm 5, and a first clamping arm 6. The connecting portion 4 is in the shape of a Z-shaped mop handle structure. A first connection port and a second connection port are respectively arranged at both ends of the connecting portion 4. The first connection port is a square hole, and the second connection port is a round hole. The component connecting arm 5 includes a long arm strip 501 and a U-shaped connection head 502 perpendicular to the long arm strip 501. The long arm strip 501 and the U-shaped connection head 502 are integrally formed. The long arm strip 501 is inserted into the first connection port and can be adjusted in length along the first connection port to adjust the overall length of Component A. A first locking bolt 7 is arranged on the connecting portion 4, and the first locking bolt 7 presses and fixes the long arm strip 501 on the connecting portion 4. One end of the first clamping arm 6 is provided with a short shaft, and the short shaft is inserted into the second connection port. The first clamping arm 6 can rotate and is simultaneously pressed and fixed by a second locking bolt 8.

[0025] As Figure 5As shown in the figure, component B includes a second clamping arm 9. One end of the second clamping arm 9 is provided with a first insertion block 11. The first insertion block 11 is inserted into the U-shaped connector 502. The first insertion block 11 is provided with a threaded hole, and a third locking bolt 10 is provided on the U-shaped connector 502. The third locking bolt 10 is screwed into the threaded hole of the first insertion block 11, thereby completing the connection between component B and component A. Thus, the second clamping arm 9 and the first clamping arm 6 are arranged opposite to each other. A semi-closed first clamping area is formed by the first clamping arm 6, the second clamping arm 9, the component connecting arm 5, and the connecting part 4. During use, loosen the first locking bolt 7, adjust the telescopic component connecting arm 5, so that the first clamping arm 6 and the second clamping arm 9 clamp the tibia, and then tighten the first locking bolt 7. As Figure 1 shown, it can be imagined that since the osteotomy plane a determined by the steel needle is parallel to the joint surface b in the sagittal plane during osteotomy, and the steel needle is obliquely inserted into the tibia, when component A and component B are used in combination, the straight line where the component connecting arm 5 and the connecting part 4 are located is in an inclined state. If the first clamping arm 6 and the second clamping arm 9 are of a fixed structure, the first clamping arm 6 and the second clamping arm 9 cannot be parallel to the side surface of the tibia, resulting in a relatively small contact surface between the first clamping arm 6 and the second clamping arm 9 and the tibia. To ensure that the first clamping arm 6 and the second clamping arm 9 can clamp the tibia better, a rotational connection relationship is set between the first clamping arm 6 and the connecting part 4. When clamping the tibia, before the operation, by measuring the distance and marking on the body surface, determine the placement positions of component A and component B at the proximal and distal ends of the tibia. Usually, the distance from the needle insertion point at the proximal end of the tibia to the joint end face is 3 cm, and the distance from the needle exit point at the distal end of the tibia to the joint end face is 1.5 cm (as Figure 1 shown). After marking, the component connecting arm 5 needs to be kept parallel to the connection line of the two marked points on both sides. Loosen the second locking bolt 8, rotate the first clamping arm 6 to be in parallel contact with the tibia and then tighten the second locking bolt 8, and then move the second clamping arm 9 to contact the tibia for locking, thereby stably clamping the tibia and ensuring the accuracy of the steel needle insertion angle, the osteotomy plane a, and the coronal osteotomy plane c.

[0026] In the above, as Figure 5 shown, the first clamping arm 6 and the second clamping arm 9 are provided with arc grooves 23. When clamping the tibia, the design of the arc grooves 23 can form a relatively larger fitting surface with the tibia compared to a planar structure, which can increase the clamping effect of the first clamping arm 6 and the second clamping arm 9 on the tibia to a certain extent. At the same time, on the same side of the first clamping arm 6 and the arc groove 23, there is a fibula clamping area 24 for fixing the fibula. The fibula clamping area 24 is provided with fixing nail holes 25. Clamp the fibula through the fibula clamping area 24, and then use bone nails to nail into the fibula from the fixing nail holes 25 to fix the first clamping arm 6 on the fibula while clamping the tibia, maintaining the stability of the entire frame during use.

[0027] The second clamping arm 9 is provided with a steel needle guiding hole 12, a saw guide hole 13 and a coronal osteotomy guiding hole 14. The steel needle guiding hole 12, the saw guide hole 13 and the coronal osteotomy guiding hole 14 all extend from the proximal tibia towards the distal tibia. The steel needle guiding hole 12 guides the steel needle to be inserted into the tibia in the correct direction, thus avoiding the trouble of repeatedly inserting the nail and ensuring the correctness of the steel needle implantation, which helps to significantly improve the success rate of the operation and reduce the operation risk. There are at least two steel needle guiding holes 12 to facilitate the formation of an osteotomy plane a for guiding osteotomy. The saw guide hole 13 is located below the steel needle guiding hole 12. During osteotomy, the saw performs osteotomy along the osteotomy plane a determined by the steel needle under the guidance of the saw guide hole 13 to ensure the accuracy of osteotomy. At the same time, a coronal osteotomy guiding hole 14 is provided on one side of the saw guide hole 13 at an angle of 110° with the cross-section where the steel needle guiding hole 12 is located. Thus, the saw performs coronal osteotomy along the direction of the coronal osteotomy guiding hole 14 to ensure that the coronal osteotomy plane c is always accurately 110° with the osteotomy plane a along the steel needle direction, avoiding the inaccuracy judged by the surgeon visually.

[0028] In a preferred embodiment, due to the different sizes of the tibial cross-sections of different patients, the positions of the coronal osteotomy guiding holes 14 will vary. To adapt to tibias of different cross-section sizes, as Figure 5 shown, a sliding guide plate 26 is provided on the side of the second clamping arm 9 away from the component A. The coronal osteotomy guiding hole 14 is provided on the guide plate 26. Specifically, a jack is provided on the side of the second clamping arm 9 away from the component A. An insertion plate 27 is provided on the side of the guide plate 26 facing the second clamping arm 9. The insertion plate 27 is inserted into the jack. A threaded hole perpendicular to and communicating with the insertion plate 27 is provided on the top surface of the second clamping arm 9. A T-shaped nail 28 is provided in the threaded hole. It can be understood that by loosening the T-shaped nail 28, the guide plate 26 can be moved left and right to adjust the position of the coronal osteotomy guiding hole 14 and lock the T-shaped nail 28 to adapt to different patients. Of course, anti-slip threads are provided on the surface of the insertion plate 27 and the bottom surface of the T-shaped nail 28 to increase the friction between the T-shaped nail 28 and the insertion plate 27, making the guide plate 26 more firmly fastened.

[0029] As Figure 6 shown, the component C includes a first fixing part 15 and a second fixing part 16. Both the first fixing part 15 and the second fixing part 16 are semi-enclosed arc plates, and bone nail perforations 17 are provided on both the first fixing part 15 and the second fixing part 16. By fitting the first fixing part 15 and the second fixing part 16 to the tibia and then using bone nails to be driven into the tibia from the bone nail perforations 17, the first fixing part 15 and the second fixing part 16 are fixed to the tibia. A cylindrical connecting rod 18 is provided on the side surface of the first fixing part 15. A second insertion block 19 is integrally formed at one end of the cylindrical connecting rod 18. The second insertion block 19 is inserted into the U-shaped connecting head 502 and fastened by a third locking bolt 10.

[0030] At the same time Figure 6 As shown, a connecting plate 20 is rotatably provided on the cylindrical connecting rod 18, and the other end of the connecting plate 20 is fixedly connected to the second fixing portion 16, so that the second fixing portion 16 can rotate around the cylindrical connecting rod 18 through the connecting plate 20. A protractor 21 is also provided on the cylindrical connecting rod 18, and the protractor 21 is provided with an axial hole, and a friction rubber gasket is provided in the axial hole. The protractor 21 is mounted on the cylindrical connecting rod 18 through the axial hole to form a damped rotation, and the connecting plate 20 is kept in an initial state so as to coincide with the 90° scale line of the protractor 21.

[0031] It can be imagined that after connecting component C with component A, the telescopic adjustment component connecting arm 5 enables the first fixing part 15 and the second fixing part 16 to cooperate with the first clamping arm 6 to clamp the tibia, and at the same time, the first fixing part 15 and the second fixing part 16 are fixed to the tibia using bone screws, and a rotational connection is formed between the first fixing part 15 and the second fixing part 16 through the connecting plate 20, so that the tibia can only complete eversion without causing left and right dislocation, thereby increasing the stability of the tibia when it is distracted and avoiding tibia dislocation. At the same time, by using the setting of the protractor 21, the flipping angle of the second fixing part 16 compared with the first fixing part 15 can be observed, thereby accurately determining the flipping angle of the tibia during correction. It is not difficult to understand that different people need to correct different tibial angles. Therefore, when the first fixing part 15 and the second fixing part 16 are used to fix the tibia of different people through bone screws, the initial angles between the first fixing part 15 and the second fixing part 16 will be different. Therefore, a damped rotation protractor 21 is provided. After the first fixing part 15 and the second fixing part 16 are fixed to the tibia, the protractor 21 can be rotated so that the 90° scale line of the protractor 21 coincides with the connecting plate 20, so that the angle of tibial valgus can be accurately measured.

[0032] Of course, it is understandable that in order to facilitate the installation of the Tomofix plate after tibial distraction, Figure 6 As shown, the front sides of the first fixing portion 15 and the second fixing portion 16 are also provided with avoidance holes 22 for installing the Tomofix steel plate.

[0033] In summary, the present invention provides an HTO surgery positioning osteotomy guide auxiliary device, and its use method is: First, connect component B with component A, and clamp the body position marking points with the first clamping arm 6 and the second clamping arm 9 according to the preoperative measurement of the distance between the proximal and distal ends of the tibia and the body surface markings, to ensure that the steel needle guide hole 12, the oscillating saw guide hole 13, and the coronal osteotomy guide hole 14 are in the correct direction; Next, use a steel needle to insert it into the tibia along the steel needle guiding hole 12. After the steel needle is inserted, use a reciprocating saw to osteotomize the tibia successively from the reciprocating saw guiding hole 13 and the coronal osteotomy guiding hole 14. After the osteotomy is completed, remove component B from component A and connect component C to component A. Then, clamp the tibia with the first clamping arm 6, the first fixing part 15 and the second fixing part 16, and use bone nails to fix the first fixing part 15 and the second fixing part 16 to the tibia. Rotate the protractor 21 so that the 90° scale line of the protractor 21 coincides with the connecting plate 20, and then use a distractor to distend the tibia from the osteotomy site at the proximal end of the tibia. Observe the distending angle through the protractor 21 until it reaches the designed value. Finally, use a Tomofix plate to fix the distended tibia through the steel needle from the avoidance hole 22 on the front of the first fixing part 15 and the second fixing part 16, and complete the correction of the tibia.

[0034] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A HTO surgical positioning osteotomy guide auxiliary device, characterized in that: It comprises a component A, a component B and a component C, wherein the component B and the component C can be replaced and assembled on the component A; The component A and the component B are connected to form a first clamping area for clamping the tibia, and the component B is provided with at least one group of steel needle guide holes for guiding the insertion of steel needles, an oscillating saw guide hole parallel to the cross section where the steel needle guide holes are located, and a coronal osteotomy guide hole at an angle of 110° to the cross section where the steel needle guide holes are located; The component A and the component C are connected to form a second clamping area for clamping the tibia. The component C includes a first fixing part and a second fixing part. The first fixing part and the second fixing part are fixed to the tibia through bone screws. The second fixing part rotates relative to the first fixing part to correct the tibia from valgus deformity to a normal force line. The first fixing part is provided with a protractor for measuring the flip angle of the second fixing part.

2. The HTO surgical positioning osteotomy guiding auxiliary device according to claim 1, characterized in that: The component A comprises: A connecting portion, wherein two ends of the connecting portion are respectively provided with a first connecting port and a second connecting port; A component connecting arm, the component connecting arm is slidably inserted into the first connecting port and fastened by a first locking bolt; The first clamping arm is rotatably disposed in the second connecting port along a direction perpendicular to the connecting portion and is fastened by a second locking bolt.

3. The HTO surgical positioning osteotomy guiding auxiliary device according to claim 2, characterized in that: The component connecting arm includes a long arm bar and a U-shaped connector perpendicular to the long arm bar, the long arm bar is inserted into the first connecting port, and the component B and the component C are both connected to the U-shaped connector.

4. The HTO surgical positioning osteotomy guiding auxiliary device according to claim 3, characterized in that: The component B includes a second clamping arm, which is arranged opposite to the first clamping arm, and one end of the second clamping arm is provided with a first plug-in block inserted into the U-shaped connector, and the first plug-in block is fastened by a third locking bolt.

5. The HTO surgical positioning osteotomy guiding auxiliary device according to claim 4, characterized in that: The second clamping arm is provided with the steel needle guide hole, the oscillating saw guide hole and the coronal osteotomy guide hole.

6. The HTO surgery positioning osteotomy guiding auxiliary device according to claim 4, characterized in that: The first clamping arm and the second clamping arm are provided with arc grooves that fit the tibia.

7. The HTO surgery positioning osteotomy guiding auxiliary device according to claim 3, characterized in that: The first fixing part and the second fixing part are both semi-enclosed arc plates, the first fixing part and the second fixing part are provided with bone screw through holes, and the front sides of the first fixing part and the second fixing part are also provided with avoidance holes for installing Tomofix steel plates.

8. The HTO surgery positioning osteotomy guiding auxiliary device according to claim 7, characterized in that: A cylindrical connecting rod is provided on the side of the first fixing portion, one end of the cylindrical connecting rod is plugged into the U-shaped connecting head through a second plug block and is fastened by a third locking bolt.

9. The HTO surgery positioning osteotomy guiding auxiliary device according to claim 8, characterized in that: A connecting plate is rotatably provided on the cylindrical connecting rod, the other end of the connecting plate is fixedly connected to the second fixing part, and the second fixing part rotates around the cylindrical connecting rod through the connecting plate.

10. The HTO surgery positioning osteotomy guiding auxiliary device according to claim 9, characterized in that: The cylindrical connecting rod is also provided with a protractor with damped rotation, and the connecting plate is located to coincide with the 90° scale line of the protractor in an initial state.

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