Load line confirming device in lower limb osteotomy correction

Abstract

The weight line confirmation device comprises a force rope which is located above a patient and used for displaying the weight line of the lower limb, and the two ends of the force rope are arranged on a hip joint femoral head center determiner and an ankle joint center determiner respectively; the hip joint femoral head center determiner comprises a door-shaped mounting frame which is mounted on an operating bed, and a front side fixing assembly which is used for fixing one end of a force rope and can be adjusted up and down is arranged on the mounting frame; the ankle joint fixator comprises a foot fixing assembly used for fixing the foot, a rear side fixing assembly used for fixing the other end of the force rope and capable of being adjusted in the left-right direction and the up-down direction, and a pressure applying assembly used for applying pressure to the foot. A force rope is arranged for simulating a lower limb weight line, the lower limb weight line is visible, comparison of the lower limb weight line is convenient to correct, meanwhile, a pressure applying assembly is arranged on an ankle joint fixator, when the lower limb weight line is determined, pressure can be applied to a foot, the standing state is simulated, and then the accuracy of simulation of the lower limb weight line is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of medical surgical auxiliary device technology, specifically relating to a weight-bearing force line confirmation device in lower limb osteotomy and orthopedic surgery. Background Technology

[0002] The lower limb weight-bearing line, also known as the lower limb mechanical axis, refers to the line connecting the center of the femoral head of the hip joint and the center of the ankle joint in a standing position. The lower limb weight-bearing line is the line of gravity of both legs. In cases of knee osteoarthritis or other diseases caused by fractures, degeneration, or developmental deformities, abnormalities in the lower limb weight-bearing line can easily occur. In such cases, lower limb weight-bearing line correction surgery is needed to correct these abnormalities.

[0003] Currently, there are two methods for measuring force lines in lower limb alignment surgery. One method uses mechanical mechanisms to determine the force line, such as the intraoperative lower limb force line measurement tool disclosed in Chinese Patent CN109771053A. The other method uses images to establish three-dimensional coordinates to determine the lower limb force line, such as the method and system for constructing the lower limb weight-bearing force line described in Chinese Patent CN118078432A. Both methods involve measuring under non-weight-bearing force lines while the patient is lying down. Therefore, this method does not reflect the actual weight-bearing force line of a standing person, leading to potential errors in postoperative force line measurement. Literature reports that 20-40% of postoperative force lines do not match the preoperative design, resulting in under- or over-correction and poor pain relief. Achieving a standing position during surgery is extremely difficult; currently, anesthesia and patient positioning cannot meet the basic requirements for standing surgery, making it impossible to perform standing surgery. Therefore, the intraoperative weight-bearing force line device of the present invention simulates the weight-bearing force line of the lower limbs when standing by applying pressure to the foot in the supine position during surgery, which well meets the osteotomy requirements of the weight-bearing force line. Summary of the Invention

[0004] This invention proposes a weight-bearing force line confirmation device for lower limb osteotomy and orthopedic surgery. By applying pressure to the foot, it can more accurately simulate the force line when the lower limb is bearing weight, which facilitates the accuracy of orthopedic surgery and ensures that the postoperative force line matches the preoperative designed force line, thus achieving good clinical results.

[0005] Therefore, the technical solution adopted by the present invention is as follows: a weight-bearing force line confirmation device in lower limb osteotomy and correction surgery, comprising a force rope located above the patient for displaying the weight-bearing force line of the lower limb, one end of the force rope being set on a hip joint femoral head center determiner and the other end being set on an ankle joint center determiner; the hip joint femoral head center determiner comprising a door-shaped mounting frame mounted on an operating table, the mounting frame being provided with a front fixation component for fixing one end of the force rope and adjustable up and down; the ankle joint fixation component comprising a foot fixation component for fixing the foot, a rear fixation component for fixing the other end of the force rope and adjustable left and right and up and down, and a pressure application component for applying pressure to the foot.

[0006] As a preferred embodiment of the above scheme, the pressure application component includes a pressure application seat disposed on the pressure application fixing component, a pressure application screw extending forward and backward connected to the pressure application seat, a pressure application rotating handle for rotating the pressure application screw at the rear end of the pressure application screw, a pressure application sleeve disposed at the front end of the pressure application screw, a pressure application rod extending forward and backward slidably disposed within the pressure application sleeve, the front end of the pressure application rod being disposed on the foot fixing component, and a pressure application spring located between the pressure application rod and the foot fixing component being sleeved on the pressure application rod.

[0007] Further preferably, the pressure fixing assembly is used to install the pressure assembly on the extension portion located at the rear end of the operating table. The pressure fixing assembly includes pressure fixing rods extending to the left and right. Both ends of the pressure fixing rods are provided with first fixing components that can fix the extension portion. Pressure support rods extending forward and backward are provided on the pressure fixing rods at intervals to the left and right. The pressure support rods are slidably connected to the pressure seat.

[0008] More preferably, the pressure-applying seat includes an upper pressure-applying seat and a lower pressure-applying connecting seat extending to the left and right below the upper pressure-applying seat, and the upper pressure-applying seat and the lower pressure-applying connecting seat are connected by a second fixing component.

[0009] Further preferably, the foot fixing assembly includes a foot support portion and a connecting portion. The connecting portion is disposed on a rotating seat on the pressure fixing assembly. The front end of the pressure rod is fixed on the rotating seat. A support frame is disposed on the front side of the rotating seat. The lower end of the support frame is hinged to the rotating seat via a hinge shaft. An arc-shaped groove is disposed on the rotating seat. An angle adjusting bolt passing through the arc-shaped groove is disposed on the support frame. When tightened by a nut, the angle of the support frame can be fixed.

[0010] In a further preferred embodiment, the foot support portion includes two connecting rods extending to the left and right sides of the support frame near the lower end, with a foot support rod for supporting the foot sleeved between the front ends of the two connecting rods, and hooks for fixing the gauze wrapped around the foot provided on the left and right sides of the support frame.

[0011] In a further preferred embodiment, the foot support rod is provided with sleeves on both the left and right sides that can be fitted onto the connecting rod, and the sleeves are equipped with wing bolts for fixing the foot support rod at the position of the connecting rod.

[0012] Further preferably, the sliding structure includes a sliding groove extending forward and backward on the pressure support rod, a roller that can move within the sliding groove on the pressure seat, and a pressure fixing bolt for fixing the position of the pressure seat. When the pressure fixing bolt is rotated, it can abut against the pressure support rod, thereby fixing the pressure seat. The bottom surface of the rotating seat is also provided with a roller that can move within the sliding groove, and the rotating seat is provided with a rotating seat fixing bolt for fixing the position of the rotating seat.

[0013] Further preferably, the rear fixing assembly includes a rear fixing rod and a rear mounting plate arranged opposite to each other. The rear fixing rod and the rear mounting plate are connected by two rear connecting rods spaced apart on the left and right. The rear fixing rod is provided with a rear fixing ring for fixing the other end of the force rope by a clamp. The rear mounting plate is fixed to the support frame by tightening bolts. The support frame is provided with a number of tightening nuts spaced apart vertically for tightening the bolts.

[0014] Further preferably, the rear end of each rear connecting rod is fixed to the rear mounting plate by locking nuts located on the front and rear sides of the rear mounting plate. The front side of each rear connecting rod is provided with a rear connecting block to realize the connection between the corresponding rear connecting rod and the rear fixing rod. The rear connecting block includes a first sleeve coaxial with the rear fixing rod and a second sleeve connected to the rear connecting rod. The rear connecting rod and the second sleeve are threadedly connected. The rear fixing rod is threadedly connected to any first sleeve.

[0015] In a further preferred embodiment, the support frame includes two rectangular and hollow support frames spaced apart on the left and right, and a plurality of connecting sleeves spaced apart vertically between the support frames, wherein the tightening nut is an internal thread disposed within the connecting sleeve.

[0016] Further preferably, the mounting frame includes two support columns arranged in a figure-7 shape, a transverse column mounted on the two support columns and extending to the left and right, and a mounting slider connected to the operating table. The mounting slider is slidably mounted on a slide rail located on the side of the operating table and extending back and forth. A slider fixing bolt is screwed onto the slider. When the slider fixing bolt is rotated, the slider fixing bolt abuts against the slide rail, thereby fixing the back and forth position of the support columns.

[0017] In a further preferred embodiment, the mounting slider is provided with a support fixing nut through which the lower end of the support column passes. A support fixing bolt is screwed onto the end of the support fixing nut away from the operating table. A support rotation handle is provided on the support fixing bolt for rotating the support fixing bolt. When the support rotation handle is rotated, the support fixing bolt can be rotated. Through the screw connection between the support fixing nut and the support fixing bolt, the support fixing bolt can abut against the support column, thereby fixing the height of the support column.

[0018] Further preferably, the left and right ends of the transverse column are provided with mounting through holes that can be fitted onto the support column, and either the left or right end of the transverse column is provided with an adjusting fixing nut for fixing the transverse column. An adjusting fixing screw is screwed into the adjusting fixing nut, and the adjusting fixing screw can pass through the transverse column and abut against the support column.

[0019] Further preferably, the front fixing assembly includes a U-shaped adjusting post extending left and right and located on the rear side of the mounting frame, and a front fixing ring for fixing the force rope. Both ends of the adjusting post are provided with third fixing components that can be fixed on the mounting frame. A tensioning block is provided on the adjusting post through a fourth fixing component. A tensioning wheel is rotatably provided on the rear side of the tensioning block. The front fixing ring is provided with a threaded section extending front and back at the end facing near the adjusting post, and the threaded section is screwed onto an adjusting block that can be locked onto the adjusting post from top to bottom. An adjusting spring is provided on the front fixing ring, and one end of the force rope passes around the tensioning wheel and is fixed to one end of the adjusting spring.

[0020] The beneficial effects of this invention are:

[0021] 1) A force rope is set up to simulate the lower limb weight-bearing line, making the lower limb weight-bearing line visible and facilitating the comparison of the lower limb weight-bearing line for correction. At the same time, a pressure-applying component is set on the ankle joint fixator so that pressure can be applied to the foot when determining the lower limb weight-bearing line, thereby simulating the standing state and ensuring the accuracy of the simulation of the lower limb weight-bearing line.

[0022] 2) The application is provided with a front fixing component that can fix one end of the force rope and adjust it left and right as well as up and down, and a rear fixing component that can fix the other end of the force rope and adjust it left and right as well as up and down, so that the force line of this application can be matched to different people.

[0023] 3) During the surgical correction process, medical staff can leave the X-ray irradiation area during fluoroscopy, avoiding radiation damage to the medical staff. However, during other force line corrections, medical staff need to maintain the force line of the lower limbs, which will result in radiation exposure. Over time, this will cause physical harm to the medical staff. Attached Figure Description

[0024] Figure 1 This is the front view of the present invention.

[0025] Figure 2 This is a top view of the rear fixing component in this invention.

[0026] Figure 3 This is a top view of the foot fixation component in this invention.

[0027] Figure 4 This is a side view of the top view in this invention.

[0028] Figure 5 This is a top view of the front fixing component in this invention.

[0029] Reference numerals: Force rope-1, Pressure seat-2, Pressure screw-3, Pressure rotating handle-4, Pressure sleeve-5, Pressure rod-6, Pressure spring-7, Pressure fixing rod-8, Pressure support rod-9, Rotating seat-10, Support frame-11, Angle adjusting bolt-12, Connecting rod-13, Foot support rod-14, Hook-15, Rear fixing rod-16, Rear mounting plate-17, Rear connecting rod-18, Clamp-19, Rear fixing ring-20, Tightening bolt-21, Tightening nut-22, Support column-23, Horizontal column-24, Adjusting fixing screw-25, Adjusting column-26, Front fixing ring-27, Tensioning block-28, Tensioning wheel-29, Adjusting clip-30. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0031] like Figure 1-5 As shown, the weight-bearing alignment confirmation device in lower limb osteotomy and correction surgery mainly consists of a force rope 1, a hip joint femoral head center determiner, and an ankle joint center determiner. The hip joint center determiner is used to determine the position of the hip joint femoral head center, and the ankle joint center determiner is used to determine the position of the ankle joint center. The two ends of the force rope are respectively set at the hip joint femoral head center determiner and the ankle joint center determiner, allowing the force rope to simulate the weight-bearing alignment of the lower limb.

[0032] Specifically, the hip joint femoral head centering device includes a gate-shaped mounting frame that is mounted on an operating table. The mounting frame has a front fixation assembly that is adjustable left and right to fix one end of a force cable. The mounting frame includes two opposing support columns 23 arranged in a figure-7 shape, transverse columns 24 mounted on the two support columns 23 and extending left and right, and a mounting slider that connects the mounting frame to the operating table.

[0033] To facilitate patient placement and departure, mounting through holes are provided at both ends of the transverse column 24, which can be fitted onto the support column 23. An adjusting nut for fixing the transverse column 24 is provided at either end of the transverse column 24. An adjusting screw 25 is screwed into the adjusting nut, and the adjusting screw 25 passes through the transverse column 24 and rests against the support column 23. When measurement is required, the transverse column is inserted into the corresponding support column, and then the adjusting screw is tightened to fix the transverse column to the support column. The transverse column can be removed to facilitate patient placement and departure.

[0034] To accommodate patients of different heights, a sliding block is installed on a slide rail located on the side of the operating table and extending forward and backward. This allows the position of the front fixation component to be adjusted according to the patient's height, facilitating alignment with the hip joint. To secure the support column after adjustment, a sliding block fixing bolt is screwed onto the sliding block. Rotating the fixing bolt causes it to abut against the slide rail, thus fixing the forward and backward position of the support column. The use of a slide rail on the operating table is existing technology.

[0035] To adjust the height of the support column, a support fixing nut is provided on the mounting slider for the lower end of the support column to pass through. A support fixing bolt is screwed onto the end of the support fixing nut away from the operating table. A support rotation handle is provided on the support fixing bolt for rotating the support fixing bolt. When the support rotation handle is rotated, the support fixing bolt is rotated. Through the screw connection between the support fixing nut and the support fixing bolt, the support fixing bolt can abut against the support column, thereby fixing the height of the support column.

[0036] To enable the front fixing component to drive left and right adjustment, the front fixing component includes a U-shaped adjusting column 26 extending left and right and located at the rear of the mounting bracket, and a front fixing ring 27 for fixing the force rope. A third fixing component that can be fixed to the mounting bracket is provided at both ends of the adjusting column 26. A tensioning block 28 is provided on the adjusting column 26 through a fourth fixing component. A tensioning wheel 29 is rotatably provided on the rear side of the tensioning block 28. A threaded section extending front and back is provided at the end of the front fixing ring 27 facing closer to the adjusting column, and the threaded section is screwed onto the adjusting block 30 that can be locked onto the adjusting column from top to bottom. To ensure that the force rope is in a taut state, an adjusting spring is provided on the front fixing ring 27, and one end of the force rope passes around the tensioning wheel 29 and is fixed to one end of the adjusting spring.

[0037] To simulate a standing position while lying down, the ankle fixation device includes a foot fixation component for fixing the foot, a posterior fixation component for fixing the other end of the force cable and adjustable left and right and up and down, and a pressure application component for applying pressure to the foot. The pressure application component applies pressure simultaneously to simulate the lower limb weight-bearing force line being subjected to pressure from body weight when standing.

[0038] Specifically, the pressure-applying assembly includes a pressure-applying seat 2 mounted on a pressure-applying fixing assembly. A pressure-applying screw 3 extending forward and backward is screwed onto the pressure-applying seat 2. A pressure-applying rotating handle 4 for rotating the pressure-applying screw 3 is located at the rear end of the pressure-applying screw 3. A pressure-applying sleeve 5 is located at the front end of the pressure-applying screw 3. A pressure-applying rod 6 extending forward and backward is slidably mounted inside the pressure-applying sleeve 5. The front end of the pressure-applying rod 6 is mounted on the foot fixing assembly, and a pressure spring 7 is sleeved on the pressure-applying rod 6, located between the pressure-applying rod 6 and the foot fixing assembly. When the pressure-applying rotating handle is rotated, the pressure-applying screw and the pressure-applying sleeve are moved forward. Since the pressure-applying rod is fixed, the pressure-applying sleeve pushes the spring to compress, thereby applying pressure to the foot fixing assembly.

[0039] The pressure fixing assembly is used to install the pressure fixing assembly on the extension part located at the rear end of the operating table. Specifically, the pressure fixing assembly includes a pressure fixing rod 8 extending to the left and right. At both ends of the pressure fixing rod 8, there are first fixing components that can fix the pressure fixing rod to the extension part. Pressure support rods 9 extending forward and backward are provided on the pressure fixing rod 8 at intervals on the left and right.

[0040] The foot fixation assembly includes a foot support part and a connecting part. Specifically, the connecting part is a rotating seat 10 on the pressure fixing assembly. The front end of the pressure rod 6 is fixed on the rotating seat 10. A support frame 11 is provided on the front side of the rotating seat 10, and the lower end of the support frame 11 is hinged to the rotating seat 10 through a hinge shaft. An arc-shaped groove is provided on the rotating seat 10, and an angle adjustment bolt 12 passing through the arc-shaped groove is provided on the support frame 11. When the angle adjustment bolt 12 is tightened by the nut, the angle of the support frame 11 can be fixed. The angle adjustment is provided so that it can better match the pressure of the lower limb's weight-bearing force line.

[0041] The foot support includes two connecting rods 13 extending laterally and positioned near the lower ends on the left and right sides of the support frame 11. A foot support rod 14 is sleeved between the front ends of the two connecting rods 13 to support the foot. Hooks 15 for securing the gauze wrapped around the foot are also provided on the left and right sides of the support frame 11. The gauze secures the foot, preventing it from moving.

[0042] The rear fixing assembly includes a rear fixing rod 16 and a rear mounting plate 17 arranged opposite each other. The rear fixing rod 16 and the rear mounting plate 17 are connected by two rear connecting rods 18 arranged at intervals on the left and right. A rear fixing ring 20 for fixing the other end of the force rope is provided on the rear fixing rod 16 by a clamp 19. The rear mounting plate 17 is fixed to the support frame 11 by tightening bolts 21. Several tightening nuts 22 for tightening bolts 21 are arranged at intervals on the support frame 11. By tightening the tightening bolts to the tightening nuts at different heights, the height of the rear force rope can be adjusted.

[0043] Specifically, the rear end of each rear connecting rod is fixed to the rear mounting plate by locking nuts located on the front and rear sides of the rear mounting plate. Each rear connecting rod has a rear connecting block on its front side to connect the corresponding rear connecting rod to the rear fixing rod. The rear connecting block includes a first sleeve coaxial with the rear fixing rod and a second sleeve connected to the rear connecting rod. The rear connecting rod and the second sleeve are threaded together. The rear fixing rod is threaded to any first sleeve.

[0044] The entire device is made of stainless steel or other metals, enabling it to undergo high-temperature and high-pressure sterilization, thus meeting the aseptic requirements during surgery. A pressure connecting rod is located at the rear end of the two pressure support rods, and a fifth fixing component is also installed between the pressure fixing rod and the pressure connecting rod. The pressure seat includes an upper pressure seat and lower pressure connecting seats extending to the left and right below the upper pressure seat, and the upper pressure seat and lower pressure connecting seat are connected by a second fixing component. Simultaneously, a sliding structure connects the pressure support rod 9 and the pressure seat 2, which not only facilitates disassembly but also allows for fine-tuning according to the patient's actual condition, ensuring compatibility with other patients' heights and weights.

[0045] The sliding structure includes a sliding groove extending forward and backward on the pressure support rod. A roller capable of moving within the sliding groove is provided on the pressure seat. The pressure seat is equipped with a pressure fixing bolt for fixing its position. When the pressure fixing bolt is rotated, it abuts against the pressure support rod, thereby fixing the pressure seat. Correspondingly, a roller capable of moving within a sliding groove is also provided on the bottom surface of the rotating seat, and a rotating seat fixing bolt is provided for fixing its position.

[0046] To reduce weight, the support frame includes two rectangular and hollow support frames spaced apart on the left and right, and several connecting sleeves spaced apart vertically between the support frames. The tightening nut is an internal thread set in the connecting sleeve.

[0047] The first, second, third, and fourth fixing components, as well as the component without fixing, have the same structure, each including a fixing block that can be engaged with a corresponding component. A fixing bolt is screwed onto the fixing block to abut against the corresponding component. Throughout the entire device, the bolt end is designed as a ring or butterfly shape for tightening.

Claims

1. A device for confirming the weight-bearing line during lower limb osteotomy and orthopedic surgery, characterized in that: The device includes a force rope (1) positioned above the patient to display the weight-bearing line of the lower limbs. One end of the force rope (1) is set on a hip joint femoral head centering device, and the other end is set on an ankle joint centering device. The hip joint femoral head centering device includes a door-shaped mounting frame mounted on an operating table. The mounting frame is provided with a front fixation component for fixing one end of the force rope and is adjustable up and down. The ankle joint fixation device includes a foot fixation component for fixing the foot, a rear fixation component for fixing the other end of the force rope and is adjustable left and right and up and down, and a pressure application component for applying pressure to the foot.

2. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 1, characterized in that: The pressure application assembly includes a pressure application seat (2) disposed on a pressure application fixing assembly. A pressure application screw (3) extending forward and backward is screwed onto the pressure application seat (2). A pressure application rotating handle (4) for rotating the pressure application screw (3) is disposed at the rear end of the pressure application screw (3). A pressure application sleeve (5) is disposed at the front end of the pressure application screw (3). A pressure application rod (6) extending forward and backward is slidably disposed inside the pressure application sleeve (5). The front end of the pressure application rod (6) is disposed on the foot fixing assembly, and a pressure spring (7) located between the pressure application rod (6) and the foot fixing assembly is sleeved on the pressure application rod (6).

3. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 2, characterized in that: The pressure fixing assembly is used to install the pressure assembly on the extension part located at the rear end of the operating table. The pressure fixing assembly includes a pressure fixing rod (8) extending to the left and right. Both ends of the pressure fixing rod (8) are provided with a first fixing assembly that can fix the extension part. The pressure fixing rod (8) is provided with a pressure support rod (9) extending forward and backward at intervals on the left and right. The pressure support rod (9) is slidably connected to the pressure seat (2).

4. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 2, characterized in that: The foot fixing assembly includes a foot support part and a connecting part. The connecting part is set on a rotating seat (10) on the pressure fixing assembly. The front end of the pressure rod (6) is fixed on the rotating seat (10). A support frame (11) is provided on the front side of the rotating seat (10). The lower end of the support frame (11) is hinged to the rotating seat (10) through a hinge shaft. An arc groove is provided on the rotating seat (10). An angle adjusting bolt (12) passing through the arc groove is provided on the support frame (11). When the angle adjusting bolt (12) is tightened by a nut, the angle of the support frame (11) can be fixed.

5. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 4, characterized in that: The foot support part includes two connecting rods (13) extending to the left and right sides of the support frame (11) near the lower end. A foot support rod (14) for supporting the foot is sleeved between the front ends of the two connecting rods (13). Hooks (15) for fixing the gauze wrapped around the foot are provided on the left and right sides of the support frame (11).

6. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 4, characterized in that: The rear fixing assembly includes a rear fixing rod (16) and a rear mounting plate (17) arranged opposite to each other. The rear fixing rod (16) and the rear mounting plate (17) are connected by two rear connecting rods (18) arranged at intervals on the left and right. The rear fixing rod (16) is provided with a rear fixing ring (20) for fixing the other end of the force rope by a clamp (19). The rear mounting plate (17) is fixed to the support frame (11) by tightening bolts (21). The support frame (11) is provided with a number of tightening nuts (22) arranged at intervals on the top and bottom for tightening bolts (21).

7. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 1, characterized in that: The mounting frame includes two support columns (23) arranged in a 7-shape facing each other, a transverse column (24) mounted on the two support columns (23) and extending to the left and right, and a mounting slider connecting the mounting frame to the operating table. The mounting slider is slidably mounted on a slide rail located on the side of the operating table and extending back and forth. A slider fixing bolt is screwed onto the slider. When the slider fixing bolt is rotated, the slider fixing bolt abuts against the slide rail, thereby fixing the front and rear positions of the support columns. The mounting slider is provided with a support fixing nut through which the lower end of the support column passes. A support fixing bolt is screwed onto the end of the support fixing nut away from the operating table. A support rotation handle is provided on the support fixing bolt for rotating the support fixing bolt. When the support rotation handle is rotated, the support fixing bolt can be rotated. Through the screw connection between the support fixing nut and the support fixing bolt, the support fixing bolt can abut against the support column, thereby fixing the height of the support column. The left and right ends of the transverse column (24) are provided with mounting through holes that can be fitted onto the support column (23). The left and right ends of the transverse column (24) are provided with an adjusting fixing nut for fixing the transverse column (24). An adjusting fixing screw (25) is screwed into the adjusting fixing nut. The adjusting fixing screw (25) can pass through the transverse column (24) and abut against the support column (23).

8. The weight-bearing line confirmation device in lower limb osteotomy and orthopedic surgery according to claim 1, characterized in that: The front fixing assembly includes a U-shaped adjusting column (26) extending to the left and right and located on the rear side of the mounting frame, and a front fixing ring (27) for fixing the force rope. Both ends of the adjusting column (26) are provided with a third fixing assembly that can be fixed on the mounting frame. A tensioning block (28) is provided on the adjusting column (26) through a fourth fixing assembly. A tensioning wheel (29) is rotatably provided on the rear side of the tensioning block (28). The front fixing ring (27) is provided with a threaded section extending forward and backward on the end facing the adjusting column, and the threaded section is screwed onto an adjusting block (30) that can be locked onto the adjusting column from top to bottom. An adjusting spring is provided on the front fixing ring (27), and one end of the force rope passes around the tensioning wheel (29) and is fixed to one end of the adjusting spring.

Images