Femoral neck osteotomy baffle in hip replacement

Abstract

A femoral neck osteotomy baffle in hip replacement comprises a handle, a downward bending part is formed at the front end of the handle, a shielding part which is bent and extends upwards after passing through a linear extension section is formed at the front end of the downward bending part, the width of the shielding part is 25-28 mm, the shielding part is an arc-shaped bending section, the radius of the arc-shaped bending section is 25 mm, and the width of the shielding part is 25-28 mm. The central angle of the arc-shaped bent section is 140 degrees, the front end of the arc-shaped bent section comprises a guide part with the width smaller than 25 mm, and the integrally-formed femoral neck osteotomy baffle is formed. The invention provides a femoral neck osteotomy baffle plate in hip replacement, and solves the problems that when femoral neck osteotomy is carried out in hip replacement, a swing saw is easy to damage the structural tissues of a glenoid cavity and the back of the femoral neck, and the femoral neck is difficult to fix to reduce the swing of the femoral neck.

Description

technical field [0001] The invention relates to the field of medical operation appliances, in particular to a femoral neck osteotomy baffle in hip joint replacement. Background technique [0002] Anatomical basis: the diameter of the femoral head is (46.69±3.73) mm; the longitudinal length of the femoral head is (39.22±4.17) mm; the length of the head and neck axis is (95.45±8.16) mm; the length of the upper edge of the head and neck axis is (84.02±7.11 ) mm. The length of the lower edge of the head-neck axis was (99.95±9.34) mm; the anteroposterior diameter of the femoral neck was (26.27±3.15) mm; the longitudinal diameter of the femoral neck was (32.24±3.31) mm; the neck-shaft angle was (l26.21±7.13). [0003] In hip replacement surgery, the hip joint is first exposed, followed by amputation of the femoral neck, removal of the femoral head, and exposure of the acetabulum. Today, when osteotomy of the femoral neck is performed in hip replacement surgery, the assistant use...

AI Technical Summary

Problems solved by technology

However, this solution has the following problems during the operation: 1. During the operation, the operator usually judges whether the femoral neck has been cut off completely based on the feeling of the pendulum saw. However, due to inertia, if the pendulum saw cannot be withdrawn in time, It is easy to damage the structural tissue behind the femoral neck, which will also lead to the failure of the normal progress of subsequent operations; 2. The tip of the hip joint retractor currently used has a small covering area on the medial wall of the femoral neck, which is difficult to protect and relies on the hip joint The tip of the retractor tip supports the femoral neck, and it is also difficult to immobilize the femoral neck to reduce wobble

Therefore, it is difficult to complete the femoral neck osteotomy quickly, accurately and safely with the existing hip joint retractor.

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