股骨粗隆间不稳定骨折采用加强型钝角钢板(SOA)内固定的生物力学对比性研究与应用

A COMPARATIVE BIOMECHANICAL STUDY AND APPLICATION OF INTERTROCHANTERIC FRACTURES USING SOA INTERFIXATION

本文采用９具新鲜尸股骨沿着它的内外侧骨皮质粘贴６故应变片，测量股骨近端应变和位移分布，以检验ＳＯＡ钢板固定粗隆间骨折的效果。在实验前后将股骨粗隆造成二部分或四部分骨折，利用实验结果绘制应变－位移图，并与其它的内固定器械比较，加载至１８００Ｎ时比较它们的生物力学性能。结果表明，在治疗不稳定粗隆间骨折中，ＳＯＡ钢板比其它器械更具有生物力学的优势（Ｐ＜０．０１）

In this study, we examined the effect of the SOA- plate on strain and displacement in the proximal, femur, using 9 fresh cadaver femora instrumented with six strain gauges along the medial and lateral conices. Before and after experimentally created two-part and four-part fractures. Strain patterns and screw motion were compared. With previously obtained values for a sliding hip screw and the Richards screw device, the biomechanical characteristics of the three devices were loaded to 1800N. Experimental results showed, thehe other inter fixation device in the treatment of unstable intertrochanteric fractures (P<0.01).