Royer Todd D, Wasilewski Carolyn A
Department of Health, Nutrition, and Exercise Sciences, University of Delaware, Newark, DE 19716, USA.
Gait Posture. 2006 Apr;23(3):303-6. doi: 10.1016/j.gaitpost.2005.04.003.
Persons with unilateral, lower-extremity amputation are at risk of developing osteoarthritis in their intact limb. Among persons without amputation, knee osteoarthritis disease severity has been linked to elevated frontal plane knee moments. Therefore, the purpose of this study was to examine knee and hip frontal plane moments in persons with unilateral, trans-tibial amputation. We hypothesized that knee and hip internal abduction moments are greater in the intact limb compared to the prosthetic side. Three-dimensional gait mechanics were measured bilaterally from 10 persons with unilateral, trans-tibial amputation during walking to calculate lower-extremity joint moments. The intact limb knee and hip peak internal abduction moments were 46% and 39% greater, respectively, than on the prosthetic side. The intact side knee and hip peak internal abduction moments were 17% and 6% greater, respectively, than normal. Larger moments suggest joint loading is of higher magnitude on the intact side, which may be predisposed to premature joint degeneration, particularly knee osteoarthritis.
单侧下肢截肢者的健侧肢体有患骨关节炎的风险。在未截肢者中，膝关节骨关节炎的疾病严重程度与额状面膝关节力矩升高有关。因此，本研究的目的是检查单侧经胫骨截肢者的膝关节和髋关节额状面力矩。我们假设，与假肢侧相比，健侧肢体的膝关节和髋关节内收力矩更大。对10名单侧经胫骨截肢者在行走过程中进行双侧三维步态力学测量，以计算下肢关节力矩。健侧肢体的膝关节和髋关节峰值内收力矩分别比假肢侧大46%和39%。健侧的膝关节和髋关节峰值内收力矩分别比正常情况大17%和6%。更大的力矩表明健侧的关节负荷更大，这可能更容易导致关节过早退变，尤其是膝关节骨关节炎。
