Wing-augmentation reduce femoral head cutting out of dynamic hip screw
Chih-Yu Chen
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Wing-augmentation reduce femoral head cutting out of dynamic hip screw

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The dynamic hip screw (DHS) is standard for femoral intertrochanteric fracture treatment. However, post-operative failure does occur in some patients, resulting in poor prognosis. The most common failure mechanism is femoral head superior cut-out through the femoral head. We designs an improved lag screw combined with a conventional lag screw and two supplemental horizontal blades. The implant structure is designed to provide larger contact surface to prevent superior cut-out and femoral head rotation, thus improving the fixation stability. The biomechanical studies simulated hip motion of nor...