单侧多功能外固定架治疗股骨颈骨折的生物力学测定及临床应用

作者设计了应用单侧11多功能外固定支架治疗股骨颈骨折，经20具尸体股骨标本生物力学测定及临床应用128例，随访4个月～3年，骨折愈合及去除支架的时间为3～9个月，其中骨折不愈合或延迟愈合9例，股骨头坏死19例。作者认为利用3枚4mm斯氏针与螺纹钉将股骨颈骨折与股骨干在预张力下经外固定支架在体外连成一个密闭的钢架固定系统，固定范围大，既提高了固定能力又制约了钉的移动，使断端间的剪力部分转变为加压力，且闭合复位，经皮穿打外固定，方法简便，易于接受。

The Biomechanical Assay and Clinical Application of Unilateral Polyfunctional External Fixation Frame for treating Femoral Neck Fracture

The unilateral polyfunctional external fixation frame, designed for treating femoral neck fracture, was biomechanically assayed with 20 femoral samples from cadavers and applied to treat 128 patients with femoral neck fracture. The clinical data, followed - up for 4 months to 3 years, showed that the fractures were healed within 3 to 9 months in most cases, and nonunion or delayed union in 9 cases (7%) and femoral head necrosis in 19 cases (15 % ) were happened. The writers considered that a closed steel frame system is formed through fi-cating the fractured femoral neck and the femoral stem to the external fixation frame with three 4 mm Steinman's pins and screws. The large fixation range improves the ability of fixation and restricts the movement of screw. It converts shearing force into compression force. In addition, closed reduction and percutaneous pinning external fixation are easy to perform and receptible.