JP6927572B2 - Hip arthroscopic surgery simulation device - Google Patents

Description

The present invention relates to a hip arthroscopic surgery simulation device.

Femoral acetabular impingement is known as one of the causes of pain in the hip joint. Femoral acetabular impingement means that the raised deformed portion collides with the other bone when the hip joint is moving due to the raised deformity of at least one of the femoral head and the acetabulum.

Hip arthroscopic surgery is a minimally invasive treatment method for femoral acetabular impingement. In hip arthroscopic surgery, the surgeon makes incisions in the patient's skin at several points by about 2 cm, and inserts an arthroscope and surgical instruments into the incisions to cut the raised deformed portion.

"SAWBONES SURGICAL CATALOG 2016", SAWBONES, 2016, p. 9

In hip arthroscopic surgery, it is necessary to operate surgical instruments within the field of view of the arthroscope, so more advanced surgical techniques are required than in direct-view surgery in which a large incision is made in the skin. In order to improve the surgical technique, it is desirable to practice hip arthroscopic surgery using the corpse. However, it is difficult to prepare the body for surgical practice.

Therefore, a medical model representing the bones or organs of the human body is used. Non-Patent Document 1 describes a medical model of a hip joint in which the skin, femur, acetabulum, ligaments, etc. are reproduced by individual members. It is conceivable to practice hip arthroscopic surgery using such a medical model.

In hip arthroscopic surgery, it is necessary to move the femoral head appropriately so that the surgical target part and surgical instruments are located within the field of view of the arthroscope. However, in the above medical model, since the model of each part constituting the hip joint is fixed, the state of the hip joint when the femur is flexed, extended, abducted, abducted, abducted or internally rotated is reproduced. Difficult to get. Therefore, it is not possible to properly perform practice similar to actual hip arthroscopic surgery.

An object of the present invention is to provide a hip arthroscopic surgery simulation device that enables easy and appropriate practice of hip arthroscopic surgery.

(1) The acetabular surgery simulation apparatus according to the present invention includes an acetabulum model of the pelvis, a femur model having a femur head, a acetabulum holding member for holding the acetabulum model, and an acetabulum model. and femoral head supporting member for supporting the femoral model femoral femoral head portion is fitted to a shaft member attached to the femur model, first and second direction crossing the shaft member to each other around the femoral condyle portion A shaft support mechanism that swings and supports the shaft member rotatably around the axis, a fixing means that fixes the shaft member to the shaft support mechanism, and a skin model that covers the acetabulum model and the femur model. A skin holding member for holding the skin model and a joint capsule model detachably attached to the acetabulum model and the femur model are provided.

In the hip Surgery simulation apparatus, the shaft member is swingably supported by the first and second directions around the femoral condyle of the femur model, rotatably supported shaft member about the axis Will be done. Thereby, the user was fitted into the acetabular model by swinging and rotating the shaft member, similar to the operation of flexion, extension, abduction, adduction, external rotation and internal rotation of the femur. can adjust the position and orientation of the femoral condyle portion, it is possible to fix the position and orientation of the femoral condyle part by fixing the shaft member to the shaft support mechanism by the fixing means. In this state, the user can make an incision in the joint capsule model, cut the surgical target portion, and suture the joint capsule model using an arthroscope and a surgical instrument. In this way, the user can easily and appropriately practice hip arthroscopic surgery.

(2) The hip arthroscopic surgery simulation device may further include a acetabular holding member and a base member for holding the femoral head supporting member so that the relative distance between the acetabular holding member and the femoral head supporting member can be changed. good.

In this case, by changing the distance between the acetabular model and the femoral model, a state similar to the state in which the femoral head is dislocated from the acetabulum can be easily reproduced.

(3) Surgical target portion of the femoral condyle portion is formed of a hard material, it may be configured to be detachable from the other portions of the femoral condyle portions.

Here, the hard material is a material having a strength equal to or substantially equal to the strength of the femur of the human body. In this case, by matching the shape and strength of the surgical target portion with the shape and strength of the actual surgical target portion of the patient, it is possible to effectively perform the simulated surgery before the actual surgery. In addition, since the used part to be operated on can be replaced with a new part to be operated on, the practice of hip arthroscopic surgery can be repeated at low cost.

According to the present invention, it becomes possible to easily and appropriately practice hip arthroscopic surgery.

It is external perspective view of the hip arthroscopic surgery simulation apparatus which concerns on one Embodiment of this invention. (A) is a plan view of the femur model, (b) is a side view of the femur model of (a), and (c) is a side view of the femur model with the surgical target portion removed. be. It is a plan view and a side view of the femoral head support member, the acetabulum holding member, and the acetabulum model of FIG. It is a top view and a side view which shows the attachment state of a joint capsule model to a femur model and an acetabulum model. It is explanatory drawing which shows the basic procedure of hip arthroscopic surgery. It is external perspective view of the hip arthroscopic surgery simulation apparatus at the time of practice of hip arthroscopic surgery. It is a top view which shows the state which the labrum model is attached to the acetabulum model. It is a top view which shows the state which the cartilage model and the ligament model are attached to the femur model and the acetabulum model. It is sectional drawing which shows the state in which the femoral head of the femur model of FIG. 8 is fitted into the acetabulum model of FIG. It is external perspective view of the hip arthroscopic surgery simulation apparatus which concerns on another embodiment.

The hip arthroscopic surgery simulation apparatus according to the embodiment of the present invention will be described with reference to the drawings.

(1) Configuration of Hip Surgery Simulation Device FIG. 1 is an external perspective view of the hip arthroscopic surgery simulation device according to an embodiment of the present invention. As shown in FIG. 1, a circular femoral head support member 20 is fixed to the upper surface of the plate-shaped base member 10. The femoral head support member 20 supports the femoral model 30. Further, on the upper surface of the base member 10, a acetabulum holding member 50 is provided so as to be relatively movable with respect to the femoral head support member 20. The acetabulum holding member 50 holds the acetabulum model 60.

The user can adjust the distance between the femoral model 30 and the acetabular model 60 by moving the acetabular holding member 50 relative to the femoral head support member 20.

The femoral model 30 has a femoral head 31 representing the femoral head. The femoral head 31 is configured to be fitable and removable with respect to the acetabular model 60. Details of the femoral head support member 20, the femur model 30, the acetabulum holding member 50, and the acetabulum model 60 will be described later.

The femur model 30 and the acetabulum model 60 are held in a state of being fitted to each other. A sheet-shaped joint capsule model 70 is attached to the femur model 30 and the acetabulum model 60 that are fitted to each other. In FIG. 1, the outer shape of the joint capsule model 70 is shown by a alternate long and short dash line, and the joint capsule model 70 is hatched.

One end of a linear shaft member 40 is fixed to the femoral head 31 of the femur model 30. The shaft member 40 of this example is a round bar, but a square bar may be used instead of the round bar.

An arc-shaped abduction / adduction guide 210 is attached to the upper surface of the base member 10 so as to be separated from the femoral head support member 20. The center of the arc of the abduction / adduction guide 210 substantially coincides with the center of the femoral head support member 20. A movable member 220 is attached so as to be movable along the abduction / adduction guide 210.

An arcuate bending / extending guide 230 is fixed to the movable member 220 so as to be curved upward and extended. The center of the arc of the flexion / extension guide 230 substantially coincides with the center of the femoral head support member 20. The flexion / extension guide 230 has a slit 231 extending in the vertical direction. A movable member 240 is attached to the flexion / extension guide 230 so as to be movable along the flexion / extension guide 230.

The movable member 240 has a through hole 241. The other end of the shaft member 40 is inserted into the through hole 241 of the movable member 240 through the slit 231 of the flexion / extension guide 230. The shaft support mechanism 200 is composed of the abduction / adduction guide 210, the movable member 220, the flexion / extension guide 230, and the movable member 240.

Since the movable member 220 is movable along the abduction / adduction guide 210 as indicated by the arrow a1, and the movable member 240 is movable along the flexion / extension guide 230 as indicated by the arrow a2, the shaft member is movable. The 40 can swing in the horizontal direction and the vertical direction around the femoral head 31. In this case, since the movable members 220 and 240 move at the same time, the shaft member 40 can swing in the oblique direction about the femoral head 31. Further, the shaft member 40 is rotatable around the axis thereof as shown by the arrow a3.

A fastening member WS1 is attached to the movable member 220. By tightening the fastening member WS1, the movable member 220 is fixed to the abduction / adduction guide 210. By loosening the fastening member WS1, the movable member 220 can move along the abduction / adduction guide 210.

Fastening members WS2 and WS3 are attached to the movable member 240. By tightening the fastening member WS2, the movable member 240 is fixed to the flexion / extension guide 230. By loosening the fastening member WS2, the movable member 240 can move along the flexion / extension guide 230. By tightening the fastening member WS3, the shaft member 40 is fixed to the movable member 240. By loosening the fastening member WS3, the shaft member 40 can rotate around its axis.

In the present embodiment, the fastening members WS1, WS2, WS3 function as fixing means. As the fastening members WS1, WS2, WS3, for example, thumbscrews can be used.

Further, two semicircular skin holding members 91 are fixed to the upper surface of the base member 10. One skin holding member 91 is arranged so as to straddle the shaft member 40, and the other skin holding member 91 is arranged so as to straddle the acetabulum holding member 50.

A sheet-shaped skin model 92 is detachably attached on the two skin holding members 91. In FIG. 1, the skin model 92 is shown by a thick alternate long and short dash line. As a result, the femur model 30 and the acetabulum model 60 are covered with the skin model 92. The skin model 92 is formed of a soft material such as cloth or rubber.

In the present embodiment, the hook surface (or loop surface) of the hook-and-loop fastener is attached to the skin holding member 91, and the loop surface (or hook surface) of the hook-and-loop fastener is attached to the back surface of the skin model 92. The skin model 92 may be detachably attached to the skin holding member 91 by a screw, a snap, or the like instead of the hook-and-loop fastener.

(2) Femur model 30
FIG. 2A is a plan view of the femur model 30, and FIG. 2B is a side view of the femur model 30 of FIG. 2A. FIG. 2C is a side view of the femur model 30 with the surgical target portion 31a removed.

As shown in FIGS. 2A and 2B, the femur model 30 includes a femoral head 31, a femoral neck 32, a greater trochanter 33, a lesser trochanter 34, a lower trochanter 35, and a shaft member. It has a mounting portion 38. The femoral head 31 is composed of a surgical target portion 31a and a supported portion 31b.

In the femoral head 31, the surgical target portion 31a has a substantially hemispherical shape and represents the first half of the femoral head of the left femur. The supported portion 31b has a substantially hemispherical shape and represents the latter half of the femoral head of the left femur. The outer surface of the supported portion 31b is smoothly formed. The femoral neck 32, greater trochanter 33, lesser trochanter 34 and lower trochanter 35 are the femoral neck, greater trochanter, lesser trochanter and subtrochanter of the left femoral bone of the human body. Represent each.

The supported portion 31b of the femoral head 31, the femoral neck 32, the greater trochanter 33, the lesser trochanter 34, the lower trochanter 35, and the shaft member mounting portion 38 are integrally molded from a common material such as resin. There is. On the other hand, the surgical target portion 31a of the femoral head 31 is formed of a hard material and is configured to be detachably attached to the supported portion 31b as a part of the femur model 30. In FIGS. 2A and 2B, a dot pattern is attached to the surgical target portion 31a.

Here, the hard material is a material having a strength equal to or substantially equal to the strength of the femur of the human body. In the present embodiment, a clay-like hardening material such as stone powder clay is used as the hard material.

As shown in FIG. 2C, a plurality of (three in this example) protrusions 31p are formed on the upper surface of the supported portion 31b to stably support the surgical target portion 31a.

One end of the shaft member 40 is attached to the shaft member mounting portion 38. A screw member 39 is attached to each of the greater trochanter portion 33 and the lesser trochanter portion 34. These screw members 39 are used to attach the joint capsule model 70 of FIG. 1 to the femur model 30.

(3) Femoral head support member 20, acetabulum holding member 50, and acetabulum model 60
3 (a) and 3 (b) are a plan view and a side view of the femoral head support member 20, the acetabulum holding member 50, and the acetabulum model 60 of FIG. In FIGS. 3A and 3B, the femoral head support member 20 is indicated by a thick alternate long and short dash line. Further, the shaft member 40 and the femur model 30 are shown by dotted lines.

As shown in FIGS. 3A and 3B, the upper end surface of the femoral head support member 20 corresponds to the hemispherical outer surface of the supported portion 31b (FIG. 2B) of the femur model 30. The concave support surface 21 is formed. As a result, a part of the outer surface of the supported portion 31b is stably supported on the concave support surface 21.

The acetabulum holding member 50 is composed of a ground contact portion 51 and a support column 52. The ground contact portion 51 is placed on the base member 10 of FIG. The support pillar 52 is formed so as to extend upward from the ground contact portion 51. An acetabulum model 60 is attached to the upper end of the support column 52.

A plurality of screw members 69 are attached to the acetabulum model 60. These screw members 69 are used to attach the joint capsule model 70 of FIG. 1 to the acetabular model 60.

4 (a) and 4 (b) are a plan view and a side view showing a state in which the joint capsule model 70 is attached to the femur model 30 and the acetabulum model 60. In FIGS. 4A and 4B, the joint capsule model 70 is hatched.

The joint capsule model 70 is formed of a soft material such as cloth or rubber. A plurality of through holes are formed in the joint capsule model 70, and a plurality of screw members 39 and 69 attached to the femur model 30 and the acetabulum model 60 are inserted into the through holes. Thereby, the joint capsule model 70 is attached to the femur model 30 and the acetabulum model 60.

(4) Practice of hip arthroscopic surgery The outline of hip arthroscopic surgery will be explained. FIG. 5 is an explanatory diagram showing a basic procedure of hip arthroscopic surgery. In FIGS. 5A to 5F, the left hip bone B1 and the left femur B2 are shown by solid lines as skeletons in and around the lumbar region of the human body. Also, the skin covering the left hip bone B1 and the left femur B2 is indicated by a dashed line.

The initial state is shown in FIG. 5 (a). In this hip arthroscopic surgery, a part of the femoral head B21 of the left femur B2 is the surgical target part B22. First, as shown in FIG. 5B, the femoral head B21 of the left femur B2 is removed (dislocated) from the acetabulum B11 of the left hip bone B1. In addition, a part of the skin covering the hip joint is incised to form a plurality of (two in this example) openings B3.

Next, as shown in FIG. 5C, the arthroscope S1 is inserted into one opening B3, and the tip of the arthroscope S1 reaches a position near the femoral head B21. Further, the surgical instrument S2 is inserted into the other opening B3, and the tip of the surgical instrument S2 reaches a position near the femoral head B21.

Next, the joint capsule (not shown) is incised. Here, the thigh is flexed, extended, and abducted so that the tip of the surgical instrument S2 (cutter, reamer, etc.) and the surgical target portion B22 are located within the field of view of the arthroscope S1 for the arthroscope S1 and the surgical instrument S2. , Adduction, external rotation or internal rotation.

Further, as shown in FIG. 5D, the surgical instrument S2 grinds and removes the surgical target portion B22. After that, the incision portion of the joint capsule (not shown) is sutured, and as shown in FIG. 5 (e), the femoral head B21 of the left femur B2 is fitted into the acetabulum B11 of the left hip bone B1. Finally, as shown in FIG. 5 (f), the hip arthroscopic surgery is completed by suturing the plurality of openings B3.

The user can practice the above-mentioned hip arthroscopic surgery by using the hip arthroscopic surgery simulation device 100. FIG. 6 is an external perspective view of the hip arthroscopic surgery simulation device 100 during practice of hip arthroscopic surgery.

The user first adjusts the distance between the femoral model 30 and the acetabular model 60 to reproduce the state in which the femoral head is dislocated from the acetabulum. In addition, the user makes an incision in a plurality of parts of the skin model 92 to form a plurality of (two in this example) openings 92o.

Subsequently, the user inserts the arthroscope S1 and the surgical instrument S2 into the plurality of openings 92o, and incises the joint capsule model 70. In addition, the user swings the shaft member 40 in the horizontal direction, the vertical direction, or the oblique direction so that the surgical target portion 31a of the femoral head 31 is located in the field of view of the arthroscope S1, or the shaft member 40 is swung. Rotate around the axis. After that, the user fixes the shaft member 40 and cuts the surgical target portion 31a with the surgical instrument S2. Finally, the user sutures the openings of the joint capsule model 70 and the plurality of openings 92o of the skin model 92.

(5) Effect In the above-mentioned hip arthroscopic surgery simulation device 100, the shaft member 40 is supported so as to be swingable in the vertical, horizontal, and diagonal directions around the femoral head 31 of the femur model 30, and the shaft. The member 40 is rotatably supported around the axis. Thereby, the user can swing and rotate the shaft member 40 to fit the femur into the acetabular model 60 in the same manner as in the operation of flexion, extension, abduction, adduction, external rotation and internal rotation of the femur. The position and orientation of the combined femoral head 31 can be adjusted. Further, the position and orientation of the femoral head 31 can be fixed by fixing the shaft member 40 to the shaft support mechanism 200 by the plurality of fastening members WS1, WS2, WS3. In this state, the user can make an incision in the joint capsule model 70, cut the surgical target portion 31a, and suture the joint capsule model 70 using the arthroscope S1 and the surgical instrument S2. In this way, the user can easily and appropriately practice hip arthroscopic surgery.

The surgical target portion 31a of the femoral head 31 is formed of a hard material having a strength equal to or substantially equal to the strength of the femur of the human body. As a result, the user can practice cutting the surgical target portion in a state close to the actual hip arthroscopic surgery.

In the above example, a clay-like hardening material is used as the hard material for forming the surgical target portion 31a of the femoral head 31. In this case, the shape of the surgical target portion 31a can be easily adjusted. Therefore, it is possible to form the shape of the surgical target portion 31a for each patient in the same shape as the actual surgical target portion B22.

For example, a CT scanner is used to acquire a plurality of cross-sectional images within a part of the range including the hip joint, and stereoscopic data of the surgical target portion B22 is generated based on the plurality of cross-sectional images. Based on this three-dimensional data, a mold for a clay-like hardening material can be prepared, and the mold can be used to form a surgical target portion 31a having substantially the same shape as the actual surgical target portion B22 of the patient. In this way, by matching the shape of the surgical target portion 31a with the actual shape of the surgical target portion B22 of the patient, it is possible to effectively perform the simulated surgery before the surgery. Further, since the used surgical target portion 31a can be replaced with a new surgical target portion 31a, the practice of hip arthroscopic surgery can be repeated at low cost.

It is also possible to measure the bone density of the femoral head according to a plurality of cross-sectional images acquired by a CT scanner. Therefore, when the surgical target portion 31a is formed of stone powder clay, the strength of the surgical target portion 31a is adjusted to the strength of the actual bone of the patient by adjusting the mixing ratio of stone powder in the stone powder clay based on the measured bone density. It can be closer to the strength.

Furthermore, it is also possible to generate three-dimensional data of the joint capsule according to a plurality of cross-sectional images acquired by a CT scanner. Therefore, as for the joint capsule model 70, it is possible to prepare the joint capsule model 70 having substantially the same shape as the actual joint capsule of the patient based on the three-dimensional data.

(6) Another Example of Hip arthroscopic surgery simulation device 100 (a) An acetabular labrum model may be further attached to the acetabular model 60. FIG. 7 is a plan view showing a state in which the labrum model is attached to the acetabulum model 60. As shown in FIG. 7, the labrum model 81 is attached to the portion of the acetabulum model 60 that represents the outer edge of the acetabulum. As a result, the conditions of the acetabulum, the femoral head and their peripheral parts are reproduced more accurately, and it is possible to practice in a state closer to the actual hip arthroscopic surgery.

(B) A cartilage model and a ligament model may be further attached to the femur model 30 and the acetabulum model 60. FIG. 8 is a plan view showing a state in which a cartilage model and a ligament model are attached to the femur model 30 and the acetabulum model 60. FIG. 9 is a cross-sectional view showing a state in which the femoral head 31 of the femur model 30 of FIG. 8 is fitted into the acetabulum model 60 of FIG.

As shown in FIGS. 8 and 9, the cartilage model 82 is attached so as to cover the portion of the outer surface of the femoral head 31 that is fitted into the acetabular model 60. Further, a cartilage model 83 is attached so as to cover a portion of the acetabulum model 60 representing the acetabulum. Further, a ligament model 84 is attached so as to connect a part of the acetabulum model 60 and a part of the femoral head 31. As a result, the conditions of the acetabulum, the femoral head and their peripheral parts are reproduced more accurately, and it is possible to practice in a state closer to the actual hip arthroscopic surgery. The labrum model 81 of FIG. 7 may be further attached to the acetabulum model 60 of FIGS. 8 and 9.

(C) Of the surgical target portion 31a of the femoral head 31, the portion to be cut and the portion not to be cut are colored in different colors so that the portion to be cut by hip arthroscopic surgery can be easily distinguished from other parts. May be done. As a result, the user can easily identify the portion to be cut and easily recognize the degree of cutting when practicing hip arthroscopic surgery.

(7) Other Embodiments (a) The configuration of the shaft support mechanism is not limited to the configuration of the shaft support mechanism 200 of FIG. FIG. 10 is an external perspective view of the hip arthroscopic surgery simulation device 100 according to another embodiment. In the hip arthroscopic surgery simulation device 100 of FIG. 10, the shaft support mechanism 300 that supports a part of the shaft member 40 has a configuration different from that of the shaft support mechanism 200 of FIG.

In the shaft support mechanism 300 of FIG. 10, a support frame 301 having a curved plate shape is attached to the upper surface of the base member 10. A vertical slit 310 extending in the vertical direction from the vicinity of the upper end portion to the vicinity of the lower end portion of the support frame 301 is formed in the central portion of the support frame 301. The support frame 301 is formed with a lower horizontal slit 321 extending in the horizontal direction about a vertical slit 310, a middle horizontal slit 322, and an upper horizontal slit 323.

A plurality of support grooves gr are formed on the lower edges of the lower horizontal slit 3211, the middle horizontal slit 322, and the upper horizontal slit 323. The shaft member 40 is movable in the vertical slit 310, the lower horizontal slit 321 and the middle horizontal slit 322 and the upper horizontal slit 323.

In this case, the user can swing the shaft member 40 in the vertical slit 310 in the vertical direction, and swing the shaft member 40 in the lower horizontal slit 321 and the middle horizontal slit 322 and the upper horizontal slit 323 in the horizontal direction. can. Further, the user can fix the shaft member 40 at any position of the plurality of support grooves gr. In this case, the plurality of support grooves gr function as fixing means.

(B) In the above embodiment, the femur model 30 represents the femoral head, the femoral neck, the large trochanter, the small trochanter, and the subtrochanteric of the left femur of the human body, and the femoral model 60 represents the subtrochanteric bone. The femoral model 30 represents a part of the femoral head of the left femur of the human body, and the femoral head, femoral neck, large trochanter, small trochanter, and subtrochanteric bone of the right femur of the human body. The femur model 60 may be formed to represent a part of the femur of the right femur of the human body. In this case, it becomes possible to practice hip arthroscopic surgery on the right hip joint.

(C) In the shaft support mechanism 200 of FIG. 1 according to the above embodiment, a plurality of fastening members WS1, WS2, WS3 are used as means for fixing the shaft member 40, but the present invention is not limited thereto. A hook-and-loop fastener or the like may be used as the fixing means.

(D) In the above embodiment, the femoral head support member 20 is fixed to the upper surface of the base member 10, but the femoral head support member 20 is arbitrarily attached to the upper surface of the base member 10 by other fixing means such as a hook-and-loop fastener. It may be configured to be in-position mountable and removable.

(E) In the above embodiment, a clay-like hardening material such as stone powder clay is used as the hard material for forming the surgical target portion 31a of the femoral head 31, but the present invention is not limited thereto. As the hard material forming the surgical target portion 31a, instead of the clay-like hardened material, it may be formed of a synthetic resin material having strength equal to or substantially equal to the strength of the femur of the human body. Alternatively, as the hard material for forming the surgical target portion 31a, the femoral head excised from the femur of the human body by total hip arthroplasty may be used.

10 ... base member, 20 ... femoral head support member, 21 ... concave support surface, 30 ... femur model, 31 ... femoral head, 31a ... surgical target part, 31b ... supported part, 31p ... protrusion, 32 ... femur Femur neck, 33 ... large trochanter, 34 ... small trousers, 35 ... lower trousers, 38 ... shaft member mounting part, 39, 69 ... screw member, 40 ... shaft member, 50 ... femur holding member , 51 ... Ground part, 52 ... Support column, 60 ... Femur model, 70 ... Joint capsule model, 81 ... Joint lip model, 82, 83 ... Cartilage model, 84 ... Ligament model, 91 ... Skin holding member, 92 ... Skin model, 92o ... Opening, 100 ... Femoral surgery simulation device, 200 ... Axis support mechanism, 210 ... Abduction / adduction guide, 220 ... Movable member, 230 ... Flexion / extension guide, 231 ... Slit, 240 ... Movable member, 241 ... Through hole, 300 ... Shaft support mechanism, 301 ... Support frame, 310 ... Vertical slit, 321 ... Lower horizontal slit, 322 ... Middle horizontal slit, 323 ... Upper horizontal slit, B1 ... Left femur, B2 ... Left femur , B3 ... opening, B11 ... femoral head, B21 ... femoral head, B22 ... surgical target part, S1 ... arthroscope, S2 ... surgical instrument, WS1, WS2, WS3 ... fastening member, gr ... support groove

Claims (3)

Acetabulum model of the pelvis and
A femoral model with a femoral head and
The acetabulum holding member that holds the acetabulum model and
And femoral head supporting member supporting the said femoral model of the femoral condyle part to the acetabulum model was fitted,
The shaft member attached to the femur model and
A shaft supporting mechanism for rotatably supporting the swingable and the shaft member to the first and second intersecting directions the shaft member about said femoral condyle section around the axis,
A fixing means for fixing the shaft member to the shaft support mechanism,
The acetabulum model and the skin model covering the femur model,
A skin holding member that holds the skin model and
A hip arthroscopic surgery simulation device including the acetabulum model and a joint capsule model detachably attached to the femur model. The hip joint according to claim 1, further comprising a base member for holding the acetabulum holding member and the femoral head supporting member so that the relative distance between the acetabulum holding member and the femoral head supporting member can be changed. Mirror surgery simulation device. Surgery target portion of the femoral condyle portion is formed of a hard material, detachably constructed, hip Surgery simulation apparatus according to claim 1 or 2, wherein with respect to other portions of the femoral condyle portions.

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