Thighbone side eccentric distance and lower limb length reconstruction verification tool and assembly

Abstract

The utility model relates to a thighbone side eccentricity and lower limb length reconstruction verification tool and component, which comprises a verification main body, a sliding body is arranged on a horizontal section of the verification main body in a sliding manner, a connecting part is arranged at the lower end of the sliding body, and a positioning column is arranged on the connecting part through a locking component. A moving frame with an L-shaped section is arranged on the side, away from the horizontal section, of the vertical section of the verification body, third scale marks are arranged on the horizontal section of the moving frame, and second scale marks are arranged on the surface of the horizontal section of the verification body. The positioning column is inserted into a femoral lesser trochanter positioning hole, the position of the positioning column relative to the verification body is adjusted, and the positioning column is locked through the locking assembly, so that the initial femoral side transverse eccentricity and the proximal femoral anatomical axis in the operation can be positioned, and the position relation between the rotation center of the reconstructed femoral head prosthesis and the rotation center of the original femoral head is accurately positioned and quantified; and checking the conditions of the transverse eccentric distance and the longitudinal deviation distance of the reconstructed thighbone side to achieve the purpose of reconstructing the abduction arm of force and the length of the lower limb of the hip joint.

Description

Technical Field

[0001] The utility model relates to the technical field of femoral reconstruction auxiliary instruments, in particular to a femoral-side offset and lower limb length reconstruction calibration tool and assembly. Background Art

[0002] In primary hip arthroplasty, whether it is artificial femoral head replacement or total hip arthroplasty, the reconstruction of hip joint biomechanics is generally considered the key to obtaining a new joint with high performance. The reconstruction of hip joint biomechanics includes the reconstruction of combined offset and the reconstruction of lower limb length. The significance of reconstructing the combined offset is to restore the abduction lever arm of the hip joint, which includes the reconstruction of acetabular offset and femoral transverse offset. The reconstruction of the hip joint rotation center determines the acetabular offset, while the femoral-side offset is highly adjustable during the operation. The femoral-side transverse offset is an important factor in determining the reconstructed hip joint abduction lever arm, and the femoral-side longitudinal offset is a reliable basis for measuring the lower limb length. Therefore, improper reconstruction of the hip joint abduction lever arm and unequal lower limbs after surgery not only result in poor subjective feelings of the patient, but also can cause lumbar muscle imbalance, leading to low back pain, pain and instability in the operative hip.

[0003] In summary, the reconstruction of both the femoral-side transverse offset and the femoral-side longitudinal offset has high clinical significance. However, how to achieve reasonable reconstruction during the operation requires considering the following factors: 1) accurately positioning the rotation center of the femoral head before osteotomy and the rotation center of the femoral head prosthesis after prosthesis implantation during the operation; 2) when the reconstructed acetabular rotation center deviates from the original anatomical rotation center, after quantifying the degree of deviation, compensation can be made through the femoral side; 3) due to the coating thickness factor, the implantation depth of the femoral stem prosthesis in the medullary cavity often changes compared with that when using the femoral stem trial mold, which affects the reconstruction of the offset. It is of great significance to calibrate and quantify this variable. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a femoral-side offset and lower limb length reconstruction calibration tool and assembly for the deficiencies of the above-mentioned prior art.

[0005] The technical solution of the present utility model for solving the above technical problems is as follows: A femoral-side eccentricity and lower limb length reconstruction verification tool, including a verification main body with an L-shaped cross-section. A sliding body is slidably arranged on the horizontal section of the verification main body. A connecting part is arranged at the lower end of the sliding body. A positioning column for inserting into the positioning hole of the femoral lesser trochanter is arranged on the connecting part through a locking component. The positioning column can rotate around the locking component, and the locking component can lock the positioning column and the connecting part at any position within its rotation angle range. A moving frame with an L-shaped cross-section is arranged on the side of the vertical section of the verification main body away from the horizontal section. A third scale line for measuring the lateral eccentricity is arranged on the horizontal section of the moving frame. A second scale line for positioning and measuring the longitudinal eccentricity is arranged on the surface of the horizontal section of the verification main body.

[0006] The beneficial effects of the present utility model are as follows: For the femoral-side eccentricity and lower limb length reconstruction verification tool of the present utility model, the positioning column is inserted into the positioning hole of the femoral lesser trochanter, and the position of the positioning column relative to the verification main body is adjusted according to the included angle relationship between the anatomical axis of the proximal femur on the affected side and the intertrochanteric line on the preoperative DR imaging pelvic X-ray, and is locked through the above operations. In this way, the positions of the initial intraoperative relative femoral-side lateral eccentricity and longitudinal eccentricity can be measured and positioned, the position relationship between the rotation center of the femoral head prosthesis after reconstruction and the original femoral head rotation center can be accurately positioned and quantified, and the conditions of the femoral-side lateral eccentricity and longitudinal deviation after reconstruction can be verified, achieving the purpose of reconstructing the hip abduction lever arm and reconstructing the lower limb length. The structure is simple and the operation is convenient.

[0007] On the basis of the above technical solution, the present utility model can also be improved as follows:

[0008] Further: The cross-section of the connecting part is L-shaped, and the end of the vertical section of the connecting part is fixedly connected to the lower end of the sliding body. The locking component is arranged on the horizontal section of the connecting part, and the positioning column is arranged on the locking component.

[0009] The beneficial effect of the above further solution is that the connecting part can play a role in supporting and fixing the positioning column, so that it is relatively convenient to adjust the position of the positioning column by adjusting the position of the sliding body, quickly align with the positioning hole, and the operation is convenient.

[0010] Further: The locking component includes a threaded connection column, a first locking nut and a rotating plate. A threaded hole matching the threaded connection column is penetrated and arranged on the horizontal section of the connecting part. The threaded connection column is penetrated and arranged in the threaded hole. The locking nut is threadedly connected to the upper part of the threaded connection column and can lock the rotating plate and the vertical section of the connecting part. One end of the rotating plate is fixedly connected to the lower end of the threaded connection column, and the positioning column is arranged on the lower surface of the other end of the rotating plate.

[0011] The beneficial effects of the above further solution are as follows: When the rotating plate is rotated to be parallel to the intertrochanteric line, the rotating plate is locked with the vertical section of the connecting part by the first locking nut. At this time, the calibration body is parallel to the proximal anatomical axis. In this way, the longitudinal eccentricity and the transverse eccentricity can be accurately measured and positioned through the second scale line and the third scale line, so as to be used as a reference basis for the preoperative eccentricity and the re - measurement of the lower limb length.

[0012] Furthermore: The femoral - side eccentricity and lower - limb length reconstruction calibration tool further includes a support column that abuts against the femoral neck. The support column is vertically arranged at the lower end of the vertical section of the connecting part, and the support column can move up and down along the vertical section of the connecting part.

[0013] The beneficial effects of the above further solution are as follows: By providing the support column, when the rotating plate is rotated to be parallel to the intertrochanteric line and the calibration body is parallel to the proximal anatomical axis, the support column can support the sliding body, avoiding the lack of effective support for the sliding body after the original femoral head is resected, which may cause the entire tool to tilt and shift.

[0014] Furthermore: A jack matching the support column is provided at the lower end of the vertical section of the connecting part. A cavity communicating with the jack is provided in the middle of the vertical section of the connecting part. A compression spring is arranged in the cavity. The upper end of the compression spring is connected to the inner top wall of the cavity. A slidable block that can slide up and down is arranged in the cavity. The lower end of the compression spring is connected to the upper surface of the slidable block. The upper end of the support column extends into the cavity through the jack and is connected to the lower surface of the slidable block.

[0015] The beneficial effects of the above further solution are as follows: By providing the slidable block, it can ensure that the support column can slide up and down along the vertical section of the connecting part, and with the restoring force of the compression spring, automatic reset can be achieved, which is very convenient.

[0016] Furthermore: A second locking nut is provided on the side wall of the connecting part. A locking chute matching the second locking nut is provided on the side wall of the support column. The second locking nut is inserted into the cavity and can extend into the locking chute to lock the support column and the connecting part.

[0017] The beneficial effects of the above further solution are as follows: By providing the second locking nut, the support column can be adjusted to a suitable telescopic position and then locked with the connecting part, thereby realizing the stable support of the support column for the entire tool and ensuring the accuracy of measurement and calibration.

[0018] Further: The vertical section of the moving frame is slidably connected to the vertical section of the calibration body, and the vertical section of the moving frame can slide up and down relative to the vertical section of the calibration body. A third locking nut is provided on the vertical section of the moving frame, and the third locking nut can lock the vertical section of the moving frame and the vertical section of the calibration body.

[0019] The beneficial effect of the above further scheme is that by slidably connecting the vertical section of the moving frame to the vertical section of the calibration body, it is convenient to adjust the horizontal section of the moving frame to contact the femoral head prosthesis after replacing the femoral head prosthesis, so that the measurement is more accurate, and it is also convenient to determine the change amount of the initial femoral head and the diameter of the femoral prosthesis after replacement and the lateral eccentricity.

[0020] Further: A first scale line for measuring the high point of the femoral head edge is provided on the vertical section of the calibration body.

[0021] The beneficial effect of the above further scheme is that by setting the first scale line, it is convenient to measure and locate the high point of the femoral head edge, so that it is convenient to locate the high and low positions of the initial and replaced femoral heads during the operation to clarify the change in the femoral head diameter, so as to be used as a reference for adjustment during the operation.

[0022] Further: A fourth locking nut for locking it to the calibration body is provided on the sliding body.

[0023] The beneficial effect of the above further scheme is that by setting the fourth locking nut, the sliding body and the calibration body can be locked after the preoperative measurement is completed, which is convenient to use the preoperative measurement results as a reference for comparison during the operation.

[0024] The present invention also provides a femoral side eccentricity and lower limb length reconstruction calibration assembly, including a punching pressing plate and the femoral side eccentricity and lower limb length reconstruction calibration tool. One side or both sides of one end of the punching pressing plate are respectively provided with through holes for positioning and drilling the lesser trochanter of the femur, so as to form positioning holes for inserting the positioning posts at the lesser trochanter of the femur.

[0025] For the femoral side eccentricity and lower limb length reconstruction calibration assembly of the present invention, through the through holes on the punching pressing plate, it is convenient to position and drill the lesser trochanter of the femur to obtain positioning holes, so as to facilitate the insertion of the positioning posts for positioning, which is beneficial to the measurement accuracy of the calibration tool. The whole assembly has a simple structure and is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a femoral side eccentricity and lower limb length reconstruction calibration tool according to an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the relative position relationship between the femoral-side eccentricity and lower limb length reconstruction verification tool and the femoral head during use according to an embodiment of the present utility model;

[0028] Figure 3 Schematic diagram of the structure of the punching pressure plate of the femoral-side eccentricity and lower limb length reconstruction verification assembly according to an embodiment of the present utility model.

[0029] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0030] 1. Verification main body, 2. Sliding body, 3. Connecting part, 4. Positioning column, 5. Moving frame, 6. Threaded connecting column, 7. First locking nut, 8. Rotating plate, 9. Support column, 10. Second locking nut, 11. Third locking nut, 12. Punching pressure plate, 13. Fourth locking nut. Detailed implementation manners

[0031] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0032] As Figure 1 and Figure 2 shown, a femoral-side eccentricity and lower limb length reconstruction verification tool includes a verification main body 1 with an L-shaped cross-section. A sliding body 2 is slidably arranged on the horizontal section of the verification main body 1. A connecting part 3 is arranged at the lower end of the sliding body 2. A positioning column 4 for inserting into the positioning hole of the femoral lesser trochanter is arranged on the connecting part 3 through a locking assembly. The positioning column 4 can rotate around the locking assembly, and the locking assembly can lock the positioning column 4 and the connecting part 3 at any position within its rotation angle range. A moving frame 5 with an L-shaped cross-section is arranged on the side of the vertical section of the verification main body 1 away from the horizontal section. A third scale line for measuring the lateral eccentricity is arranged on the horizontal section of the moving frame 5. A second scale line for positioning and measuring the longitudinal eccentricity is arranged on the surface of the horizontal section of the verification main body 1.

[0033] For the femoral-side eccentricity and lower limb length reconstruction verification tool of the present utility model, the positioning column 4 is inserted into the positioning hole of the femoral lesser trochanter, and the position of the positioning column 4 relative to the verification main body 1 is adjusted according to the included angle relationship between the anatomical axis of the proximal femur of the affected side and the intertrochanteric line on the preoperative pelvic X-ray of the preoperative DR image, and is locked by the locking assembly. In this way, the intraoperative initial relative positions of the femoral-side lateral eccentricity and longitudinal eccentricity can be measured and positioned, the position relationship between the rotation center of the femoral head prosthesis after reconstruction and the rotation center of the original femoral head can be accurately positioned and quantified, and the femoral-side lateral eccentricity and longitudinal deviation after reconstruction can be verified, achieving the purpose of reconstructing the hip abduction lever arm and reconstructing the lower limb length. The structure is simple and the operation is convenient.

[0034] In one or more embodiments of the utility model, the cross section of the connecting portion 3 is L-shaped, and the end of the vertical section of the connecting portion 3 is connected and fixed to the lower end of the sliding body 2, the locking assembly is arranged on the horizontal section of the connecting portion 3, and the positioning column 4 is arranged on the locking assembly. The connecting portion 3 can support and fix the positioning column 4, so that the position of the positioning column 4 can be adjusted by adjusting the position of the sliding body 2, and the positioning hole can be quickly aligned, which is convenient for operation.

[0035] It should be pointed out that, in order to facilitate operation and leave room for measurement, in practice, the horizontal section of the connecting portion 3 is arranged toward the side of the vertical section away from the calibration body 1 .

[0036] In one or more embodiments of the utility model, the locking assembly includes a threaded connection column 6, a first locking nut 7 and a rotating plate 8. A screw hole matching the threaded connection column 6 is provided on the horizontal section of the connecting portion 3. The threaded connection column 6 is provided in the screw hole. The locking nut 7 is threadedly connected to the upper part of the threaded connection column 6 and can lock the rotating plate 8 with the vertical section of the connecting portion 3. One end of the rotating plate 8 is connected and fixed to the lower end of the threaded connection column 6. The lower surface of the other end of the rotating plate 8 is provided with the positioning column 4. When the rotating plate 8 is rotated to be parallel to the intertrochanteric line, the rotating plate 8 is locked with the vertical section of the connecting portion 3 by the first locking nut 7. At this time, the calibration body 1 is parallel to the proximal anatomical axis. In this way, the longitudinal eccentricity and the transverse eccentricity can be accurately measured and positioned by the second scale line and the third scale line, so as to serve as a reference for the preoperative eccentricity and the lower limb length.

[0037] In practice, the threads on the outer wall of the threaded connecting column 6 do not need to be set throughout the entire length. For example, external threads are set in the upper and middle part of the outer wall of the threaded connecting column 6, and external threads are not required to be set in the lower part of the outer wall of the threaded connecting column 6. However, the length of the space without external threads is not greater than the thickness of the horizontal section of the connecting portion 3.

[0038] Optionally, in one or more embodiments of the utility model, the femoral lateral eccentricity and lower limb length reconstruction verification tool further includes a support column 9 for supporting the femoral neck, the support column 9 is vertically arranged at the lower end of the vertical section of the connecting portion 3, and the support column 9 can telescope up and down along the vertical section of the connecting portion 3. By arranging the support column 9, when the rotating plate 8 is rotated to be parallel to the intertrochanteric line and the verification body 1 is parallel to the proximal anatomical axis, the sliding body 1 can be supported, thereby avoiding the lack of effective support of the sliding body 1 after the original femoral head is removed, resulting in tilting and displacement of the entire tool.

[0039] Specifically, in one or more embodiments of the present utility model, a jack matching the support column 9 is provided at the lower end of the vertical section of the connecting portion 3. A cavity communicating with the jack is provided in the middle of the vertical section of the connecting portion 3. A compression spring is arranged in the cavity. The upper end of the compression spring is connected to the inner top wall of the cavity. A slidable block is arranged in the cavity and can slide up and down. The lower end of the compression spring is connected to the upper surface of the slidable block. The upper end of the support column 9 extends into the cavity through the jack and is connected to the lower surface of the slidable block. By providing the slidable block, it can be ensured that the support column 9 can slide up and down along the vertical section of the connecting portion 3, and the automatic reset can be realized by means of the restoring force of the compression spring, which is very convenient.

[0040] In order to ensure that the support column 9 abuts against the femoral neck smoothly, in practice, the lower end cross section of the support column 9 is arranged in an arc shape.

[0041] Optionally, in one or more embodiments of the present utility model, a second locking nut 10 is arranged on the side wall of the connecting portion 3, and a locking chute matching the second locking nut 10 is arranged on the side wall of the support column 9. The second locking nut 10 is inserted into the cavity and can extend into the locking chute to lock the support column 9 and the connecting portion 3. By providing the second locking nut 10, the support column 9 can be adjusted to a proper telescopic position and then locked with the connecting portion 3, so as to realize the stable support of the support column 9 for the whole tool and ensure the accuracy of measurement and calibration.

[0042] In one or more embodiments of the present utility model, the vertical section of the moving frame 5 is slidably connected to the vertical section of the calibration main body 1, and the vertical section of the moving frame 5 can slide up and down relative to the vertical section of the calibration main body 1. A third locking nut 11 is arranged on the vertical section of the moving frame 5, and the third locking nut 11 can lock the vertical section of the moving frame 5 and the vertical section of the calibration main body 1. By slidably connecting the vertical section of the moving frame 5 with the vertical section of the calibration main body 1, it is convenient to adjust the horizontal section of the moving frame 5 to contact with the femoral head prosthesis after replacing the femoral head prosthesis, so that the measurement is more accurate, and it is also convenient to determine the change amount of the initial femoral head diameter and the transverse eccentricity after replacement of the femoral prosthesis during the operation.

[0043] In practice, a slide rail is integrally formed on the side wall edge of the vertical section of the calibration main body 1 away from the connecting portion 3, and a chute matching the slide rail is arranged on the vertical section of the moving frame 5. The vertical section of the moving frame 5 and the vertical section of the calibration main body 1 are slidably connected through the cooperation of the slide rail and the chute.

[0044] Optionally, in one or more embodiments of the present utility model, a first scale line for measuring the high point of the femoral head edge is provided on the vertical section of the calibration main body 1. By providing the first scale line, it is convenient to measure and locate the high point of the femoral head edge, which can facilitate the subsequent positioning of the initial and post-replacement high and low positions of the femoral head during the operation, so as to clarify the change in the femoral head diameter and serve as a reference basis for adjustment during the operation.

[0045] In one or more embodiments of the present utility model, a fourth locking nut 13 for locking the sliding body 2 to the calibration main body 1 is provided on the sliding body 2. By providing the fourth locking nut 13, the sliding body 2 and the calibration main body 1 can be locked after the preoperative measurement is completed, which is convenient for using the preoperative measurement results as a reference comparison during the operation.

[0046] As Figure 2 shown, the present utility model also provides a femoral offset and lower limb length reconstruction calibration assembly, including a punching pressing plate 12 and the femoral offset and lower limb length reconstruction calibration tool. One side or both sides of one end of the punching pressing plate 12 are respectively provided with through holes for positioning and drilling the lesser trochanter of the femur, as Figure 3 shown, so as to form a positioning hole for inserting the positioning column 4 at the lesser trochanter of the femur.

[0047] For the femoral offset and lower limb length reconstruction calibration assembly of the present utility model, through the through holes on the punching pressing plate 12, it is convenient to position and drill the lesser trochanter of the femur to obtain a positioning hole, so as to facilitate the insertion of the positioning column 4 for positioning, which is beneficial to the measurement accuracy of the calibration tool. The whole assembly has a simple structure and is convenient to operate.

[0048] It should be noted that the through holes on both sides of one end of the punching pressing plate 12 respectively correspond to the left femoral head and the right femoral head. If the needle is inserted for a certain side of the femoral head, through holes can be provided only on the corresponding side as a unilateral special punching pressing plate.

[0049] When the femoral offset and lower limb length reconstruction calibration assembly of the present utility model is actually used, first, the lesser trochanter of the femur is positioned through the through holes on the punching pressing plate 12, and then drilled to form a positioning hole at the lesser trochanter of the femur to complete the preparatory work. Before calibration, first, the angle relationship between the anatomical axis of the proximal femur on the affected side and the intertrochanteric line of the preoperative pelvic radiograph is determined through the preoperative DR image of the pelvic X-ray. Then, the first locking nut 7 is loosened, and the rotating plate 8 is rotated so that the angle between the rotating plate 8 and the calibration main body 1 is equal to the angle between the anatomical axis of the proximal femur on the affected side and the intertrochanteric line of the preoperative pelvic radiograph on the image. Then, the first locking nut 7 is tightened so that the rotating plate 8 is locked to the vertical section of the connecting part 3.

[0050] Next, insert the positioning post 4 into the positioning hole, and rotate the entire tool so that the rotation plate 8 is parallel to the inter-rotor line and the calibration body 1 is parallel to the proximal anatomical axis. Next, adjust the position of the sliding body 2 on the calibration body 1 so that the moving frame 5 is vertically aligned with the edge of the femoral head, and lock the second locking nut 10 and the fourth locking nut 13. After that, adjust the moving frame 5 so that the horizontal section of the moving frame 5 abuts against the high point of the edge of the femoral head, and lock the third locking nut 11. At this time, read the scales of the first scale line, the second scale line, and the third scale line respectively, and determine the position relationship between the rotation center of the femoral head prosthesis after reconstruction and the original femoral head rotation center through the initial femoral lateral eccentricity and the length of the affected lower limb during the femoral head rotation center positioning surgery, and check the femoral lateral eccentricity and the longitudinal deviation distance after reconstruction, so as to achieve the purpose of reconstructing the hip abduction lever arm and the length of the lower limb, which is convenient for surgical reference.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A femoral eccentricity and lower limb length reconstruction calibration tool, characterized in that The invention comprises a calibration body (1) with an L-shaped cross section, a sliding body (2) is slidably arranged on the horizontal section of the calibration body (1), a connecting part (3) is arranged at the lower end of the sliding body (2), a positioning column (4) for inserting into the positioning hole of the lesser trochanter of the femur is arranged on the connecting part (3) through a locking assembly, the positioning column (4) can rotate around the locking assembly, and the locking assembly can lock the positioning column (4) and the connecting part (3) at any position within the rotation angle range thereof, a moving frame (5) with an L-shaped cross section is arranged on the side of the vertical section away from the horizontal section of the calibration body (1), a third scale line for measuring and positioning the transverse eccentricity is arranged on the horizontal section of the moving frame (5), and a second scale line for positioning and measuring the longitudinal eccentricity is arranged on the surface of the horizontal section of the calibration body (1).

2. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 1, characterized in that The cross section of the connecting portion (3) is L-shaped, and the end of the vertical section of the connecting portion (3) is connected and fixed to the lower end of the sliding body (2). The locking assembly is arranged on the horizontal section of the connecting portion (3), and the positioning column (4) is arranged on the locking assembly.

3. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 2, characterized in that The locking assembly comprises a threaded connection column (6), a first locking nut (7) and a rotating plate (8); a screw hole matching the threaded connection column (6) is provided on the horizontal section of the connecting portion (3); the threaded connection column (6) is provided in the screw hole; the locking nut (7) is threadedly connected to the upper part of the threaded connection column (6) and can lock the rotating plate (8) with the vertical section of the connecting portion (3); one end of the rotating plate (8) is connected and fixed to the lower end of the threaded connection column (6); and the positioning column (4) is provided on the lower surface of the other end of the rotating plate (8).

4. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 1, characterized in that : It also includes a support column (9) for supporting the femoral neck, the support column (9) is vertically arranged at the lower end of the vertical section of the connecting part (3), and the support column (9) can move telescopically up and down along the vertical section of the connecting part (3).

5. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 4, characterized in that The lower end of the vertical section of the connecting portion (3) is provided with a socket matching the supporting column (9); the middle part of the vertical section of the connecting portion (3) is provided with an inner cavity connected with the socket; a compression spring is provided in the inner cavity; the upper end of the compression spring is connected to the inner top wall of the inner cavity; a sliding block that can slide up and down is provided in the inner cavity; the lower end of the compression spring is connected to the upper surface of the sliding block; the upper end of the supporting column (9) extends into the inner cavity through the socket and is connected to the lower surface of the sliding block.

6. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 5, characterized in that A second locking nut (10) is arranged on the side wall of the connecting portion (3), and a locking groove matching the second locking nut (10) is arranged on the side wall of the supporting column (9); the second locking nut (10) is inserted into the inner cavity and can extend into the locking groove to lock the supporting column (9) and the connecting portion (3).

7. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 1, characterized in that The vertical section of the movable frame (5) is slidably connected to the vertical section of the verification body (1), and the vertical section of the movable frame (5) can slide up and down relative to the vertical section of the verification body (1). A third locking nut (11) is provided on the vertical section of the movable frame (5), and the third locking nut (11) can lock the vertical section of the movable frame (5) with the vertical section of the verification body (1).

8. The femoral eccentricity and lower limb length reconstruction calibration tool according to claim 7, characterized in that The vertical section of the calibration body (1) is provided with a first scale line for measuring the height of the femoral head.

9. The femoral eccentricity and lower limb length reconstruction calibration tool according to any one of claims 1 to 8, characterized in that The sliding body (2) is provided with a fourth locking nut (13) for locking it onto the calibration body (1).

10. A femoral lateral eccentricity and lower limb length reconstruction verification component, characterized in that: It comprises a perforated pressing plate (12) and a femoral lateral eccentricity and lower limb length reconstruction verification tool as described in any one of claims 1 to 9, wherein one side or both sides of one end of the perforated pressing plate (12) are respectively provided with through holes for positioning drilling of the lesser trochanter of the femur, so as to form a positioning hole for inserting the positioning column (4) at the lesser trochanter of the femur.

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