Reich S M, Jaffe W L, Kummer F J
Hospital for Joint Diseases Orthopedic Institute, New York, NY, USA.
Bull Hosp Jt Dis. 1993;53(4):43-4.
Laboratory measurement of the tensile forces on the plate fixation screws of the sliding hip nail demonstrated that most of the force is borne by the proximal three screws in an intertrochanteric fracture model. Testing of an intact femur, which simulate a healed femur, demonstrated a proximal shift of the screw forces. Four screws appear adequate for fixation if screw torque is controlled.
对动力髋螺钉钢板固定螺钉上的拉力进行实验室测量表明，在转子间骨折模型中，大部分力由近端的三枚螺钉承担。对模拟愈合股骨的完整股骨进行测试，结果显示螺钉受力出现近端移位。如果控制螺钉扭矩，四枚螺钉似乎足以实现固定。
