股骨近端不同位置开窗对股骨强度的影响

Effect of femoral cortical windowing on different position on strength of femur

摘要:

目的 研究股骨近端不同开窗位置对股骨抗折弯强度的影响，拟为临床开窗位置的选择提供理论支 持。方法 选用新鲜的猪股骨，于近端不同位置进行开窗，对开窗后的猪股骨进行向前、向后、向内及向外4 个 方向的折弯测试，记录其最大的承载力。结果 股骨近端开窗后，各方向的折弯测试均显示抗折弯强度较未开 窗前减弱，而股骨近端不同的开窗位置对抗折弯强度也有影响。结论 股骨近端开窗后，各方向的折弯测试均 显示抗折弯强度较未开窗前减弱。股骨近端前侧开窗所造成股骨抗折弯强度丢失相对较少，要优于股骨近端 外侧开窗。

Abstract:

Objective To investigate the effect of femoral cortical windowing on different position on strength of femur. Methods Windowing on different position was completed on fresh pig femurs. MTS 810 fatigue testing machine was utilized to test the anterior, posterior, medial and lateral strength. Statistical analysis was performed on SPSS statistics 17 statistics. Results Windowing caused significant loss of strength while position affected strength post windowing. Proximal windowing achieved the least loss of strength compared with other positions. Conclusion Windowing on femur leads to loss of strength and proximal windowing is probably the best position in terms of conservation of strength.