Femoral stem prosthesis

A femoral stem and prosthesis technology, applied in the direction of prosthesis, femur, femoral head, etc., can solve the problem that the bone nail of the bone plate cannot be fixed, so as to improve the probability of success, reduce the frequency and probability of complications, and promote bone quality growth effect

Pending Publication Date: 2020-05-19
BEIJING CHUNLIZHENGDA MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When artificial hip replacement surgery is required at the same time, the bone nail of the bone plate has the disadvantage that it cannot be fixed. With the improvement of people's living standards, patients' requirements for surgery are gradually increasing. In order to reduce the probability of complications, improve the success rate of surgery and Postoperative effect, there is an urgent need for a design that can solve the problem of intertrochanteric fracture repair in the prior art

Method used

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The area between the greater trochanter and the lesser trochanter is dominated by cancellous bone, with a rich blood supply, supplied by branches of the lateral femoral circumflex artery and the medial femoral circumflex artery. The gluteus medius and gluteus minimus are attached to the greater trochanter, and are pulled upward and outward by the greater trochanter after fracture; the iliopsoas is attached to the lesser trochanter, and are pulled upward and inward by the lesser trochanter after fracture; The adductor muscle displaces the distal fracture inwards and upwards. Therefore, if the intertrochanteric patients are not repaired in time, the affected limb will appear shortened and externally rotated. adverse effects.

[0034] The intertrochanteric bone trabecula and the femoral head trabecular bone form a cantilever-like triangular mechanical st...

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Abstract

The invention relates to the field of medical instruments used in orthopedics departments and in particular relates to a femoral stem prosthesis which comprises an upper end and a lower end, wherein the upper end and the lower end are mutually connected; the lower end is used for fixing the position of the femoral stem prosthesis; a bulge is arranged on one side of the upper end; and a baffle plate which is in contact with an intertrochanteric fracture part is arranged on the other side of the upper end. Effects that intertrochanteric fracture is repaired, times and rates of complications arereduced and the success rate of operations is increased, are achieved.

Description

technical field [0001] The invention relates to the field of orthopedic medical instruments, in particular to a femoral stem 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 lesser trochanter, the front edge is connected with the antero...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/28A61F2/30
CPCA61F2/36A61F2/3609A61F2/3662A61F2/28A61F2/30749A61F2002/2825A61F2002/2832A61F2002/2828A61F2002/3625
Inventor 解凤宝史春宝童培建储小兵许奎雪王非凡荀世界
Owner BEIJING CHUNLIZHENGDA MEDICAL INSTR
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