Difazio F A, Incavo S J, Howe J D
Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington, Vermont, USA.
Clin Biomech (Bristol). 1993 Sep;8(5):274-6. doi: 10.1016/0268-0033(93)90038-J.
This study examined the effect of single versus triple-wrap cerclage fixation techniques in preventing propagation of a longitudinal fracture around a cementless femoral prosthesis. A proximal filling femoral component was implanted in 14 matched pairs of fresh-frozen bovine femora, following placement of a 45-mm longitudinal crack in the anteromedial cortical wall of the proximal femur. In one group of seven pairs, a single cerclage wire was applied to one specimen of each pair. A triple-wrap of a single cerclage wire was similarly placed in one specimen of each of the other seven pairs. All specimens were axially loaded on a materials testing system machine and the force required to propagate the fracture of the proximal femur was recorded. A triple-wrap cerclage technique required a significant increase in the force to propagate a proximal femur fracture around a non-cemented prosthesis when compared to a single cerclage wire.
本研究考察了单环与三环环扎固定技术在防止非骨水泥型股骨假体周围纵向骨折扩展方面的效果。在14对新鲜冷冻牛股骨近端植入近端填充型股骨组件，此前在股骨近端前内侧皮质壁制造一条45毫米的纵向裂缝。在一组7对标本中，给每对中的一个标本应用单根环扎钢丝。对另外7对中的每对一个标本同样应用单根环扎钢丝进行三环环扎。所有标本在材料测试系统机器上进行轴向加载，并记录使股骨近端骨折扩展所需的力。与单根环扎钢丝相比，三环环扎技术使非骨水泥型假体周围股骨近端骨折扩展所需的力显著增加。
