Internal fixing system for femoral trochanter nail plate

Abstract

The invention provides an inner fixing system for a femoral trochanter nail plate. The inner fixing system is a novel inner fixing apparatus and is formed by a femoral interlocking nail engaged with a femoral trochanter steel plate, wherein the femoral trochanter steel plate is an anatomical steel plate which meets the anatomic form of greater femoral trochanter by the crown-shaped surface and the cross section; a chute in the inner side of a pressurizing screw channel on the top end of the femoral trochanter steel plate is higher than a chute in the outer side; a closed screw of the femoral interlocking nail can be screwed to enable the femoral trochanter steel plate to be engaged with the tail of the femoral interlocking nail, and meanwhile, the femoral trochanter steel plate can be horizontally close to the femoral interlocking nail, and therefore, the femoral trochanter steel plate can be in tight contact with greater femoral trochanter. With the adoption of the system, the advantage of outstanding biomechanical stability in fixing of the femoral interlocking nail can be remained, the disadvantage that the greater femoral trochanter suffering from fracture is uneasily fixed and rebuilt can be decreased; a good internal fixing apparatus is provided for treating the fracture in the femoral trochanter area, the operative wound can be reduced, and the surgical treatment effect is improved.

Description

technical field [0001] The invention belongs to the field of orthopedic surgical instruments, specifically, a new internal fixation instrument is invented, which can effectively improve its application to complex fractures in the femoral trochanter while retaining the advantages of good biomechanical stability of femoral intramedullary nail fixation. When it is difficult to fix and reconstruct the greater trochanteric fracture block, it provides better internal fixation devices for the treatment of trochanteric fractures, reduces surgical trauma, and improves the effect of surgical treatment. Background technique [0002] At present, the internal fixation devices used for fractures of the femoral trochanter mainly include intramedullary nail systems and extramedullary nail-plate systems. Intramedullary nailing system mainly includes interlocking intramedullary nail (PNF) [1] , Gamma Nails [2] , Proximal Intramedullary Nail Antirotation (PNFA) [3] etc. The extramedullary n...

AI Technical Summary

Problems solved by technology

The femoral intramedullary fixation system has good biomechanical stability, and the femoral intramedullary nail system (PNF, Gamma nail, PNFA) is a good choice for the fracture of the femoral trochanter; In the case of fracture, it is difficult to fix and reconstruct the lateral wall of the greater trochanter with simple femoral intramedullary nail system fixation [6]

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