Wirta R W, Golbranson F L, Mason R, Calvo K
VA Medical Center, San Diego, CA 92161.
J Rehabil Res Dev. 1990 Fall;27(4):385-96. doi: 10.1682/jrrd.1990.10.0385.
Seven different suspension systems for below-knee prostheses were tested on 20 adult, unilateral amputees. All subjects walked with a prosthesis. Gait was evaluated with regard to longitudinal and vertical accelerations of the body, forward velocity, axial (piston) movement of amputated limb in the socket, and knee movement. Harmonic analyses of variable waveforms provided the primary method to discriminate performances among the suspensions. The appropriateness of a given suspension system depended on both the length and the shape of the residual limb.
针对20名成年单侧截肢者，测试了七种不同的膝下假肢悬挂系统。所有受试者均佩戴假肢行走。从身体的纵向和垂直加速度、前进速度、残肢在接受腔内的轴向（活塞式）运动以及膝关节运动方面对步态进行了评估。对可变波形进行谐波分析，是区分不同悬挂系统性能的主要方法。特定悬挂系统是否合适，取决于残肢的长度和形状。
