Yang L, Solomonidis S E, Spence W D, Paul J P
Bioengineering Unit, University of Strathclyde, Glasgow, U.K.
J Biomech. 1991;24(11):981-97. doi: 10.1016/0021-9290(91)90016-g.
Biomechanical gait tests on above-knee amputees were conducted in which the alignment of the prosthesis was changed systematically. An eight-segment biomechanical model of the above-knee amputee was developed to analyse and present the three-dimensional kinematic and kinetic data obtained. The effects of alignment changes on the above-knee amputees' gait were studied in terms of the angular displacements of the lower limbs, ground reactions and intersegmental moments. It was found that following the alignment changes the angular displacement at the hip joint on the prosthetic side showed compensatory actions by the amputee. The ground reaction force was sensitive to alignment changes, and in particular, the changes in the characteristics of the fore-aft component of the ground force could be related to the alignment changes. The antero-posterior intersegmental moments at the prosthetic ankle and knee joints were evidently influenced by alignment.
对膝上截肢者进行了生物力学步态测试，其中系统地改变了假肢的对线。开发了膝上截肢者的八段生物力学模型，以分析和呈现所获得的三维运动学和动力学数据。从下肢的角位移、地面反作用力和节段间力矩方面研究了对线变化对膝上截肢者步态的影响。结果发现，随着对线的改变，假肢侧髋关节处的角位移显示出截肢者的代偿动作。地面反作用力对线的变化很敏感，特别是地面力前后分量特征的变化可能与对线变化有关。假肢踝关节和膝关节处的前后节段间力矩明显受到对线的影响。
