Femoral stem prosthesis, greater trochanter plate and femoral trochanter prosthesis

Abstract

The invention relates to the field of orthopedic medical instruments, specifically to a femoral stem prosthesis, a greater trochanter plate and a femoral trochanter prosthesis. The femoral stem prosthesis comprise an upper end and a lower end which are mutually connected, wherein the lower end is used for fixing the position of the femoral stem prosthesis; a protrusion is arranged at one side of the upper end; a baffle plate is arranged at the other side of the upper end; a Kirschner wire hole allowing a Kirschner wire to penetrate through is arranged on the baffle plate; one side, far away from the protrusion, of the upper end is provided with a first threaded hole; one side of the greater trochanter plate sinks inwards to form an inner surface and matches a femur; a curved needle capableof being bent is arranged on the outer surface of the greater trochanter plate; and a fixed piece used for fixing the greater trochanter plate is arranged on the greater trochanter plate. Thus, intertrochanteric fracture can be repaired; the occurrence frequency and probability of complications are reduced; and the success probability of an operation is improved.

Description

technical field

[0001] The invention relates to the field of orthopedic medical devices, in particular to a femoral stem prosthesis, a greater trochanter plate and a femoral trochanter prosthesis. Background technique

[0002] The outer side of the upper part of the femur is the greater trochanter, the lower side is the lesser trochanter, and the junction of the femoral shaft and the femoral neck is the intertrochanter, which is the part subjected to the greatest shear stress. The greater trochanter, the lesser trochanter, and the intertrochanteric area are all cancellous bone. Due to the particularity of the distribution of force lines, a dense longitudinal bone plate is formed at the medial rear of the femoral neck and femoral shaft connection, called the femoral calcar. The femoral calcar is vertically upward along the anterolateral side of the lesser trochanter. Cortical bone fusion, the lower pole is fused with the posteromedial cortex of the femoral shaft below the le...

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