Lemaire E D, Fisher F R
Rehabilitation Centre, Department of Prosthetics and Orthotics, Ottawa, Ontario, Canada.
Arch Phys Med Rehabil. 1994 Oct;75(10):1094-9. doi: 10.1016/0003-9993(94)90084-1.
The hypothesis that an increased load on the nonamputated leg of long-term prosthetic users leads to an increased risk of developing osteoarthritis was investigated using physical examinations and gait analysis. Based on the clinical results from an elderly group of experienced trans-tibial amputees and a similar control group of nonamputees, the amputee group experienced a significantly greater incidence of osteoarthritis (p < 0.05) in the knee of their nonamputated leg. The amputee group had consistently larger knee joint reaction forces, joint impulses, net joint moments, and net joint powers. Significantly higher results (p < 0.05) were found for amputee vertical impulse and net joint power during the double support phase of gait. These results support the hypothesis that elderly, trans-tibial amputees have a higher risk of developing osteoarthritis and experience larger forces at the knee of their nonamputated limb than people without lower extremity amputations.
研究人员通过体格检查和步态分析，对长期使用假肢的患者非截肢腿负荷增加会导致患骨关节炎风险增加这一假说进行了调查。基于一组老年经验丰富的经胫骨截肢者的临床结果以及一组类似的非截肢者对照组，截肢者组非截肢腿膝盖患骨关节炎的发生率显著更高（p < 0.05）。截肢者组的膝关节反应力、关节冲量、净关节力矩和净关节功率一直更大。在步态双支撑阶段，截肢者的垂直冲量和净关节功率结果显著更高（p < 0.05）。这些结果支持了以下假说：老年经胫骨截肢者患骨关节炎的风险更高，且与没有下肢截肢的人相比，其非截肢肢体膝盖承受的力更大。
