Engsberg J R, Aldridge K C, Harder J A
Human Performance Laboratory, Faculty of Physical Education, University of Calgary, Canada.
Prosthet Orthot Int. 1991 Dec;15(3):185-91. doi: 10.3109/03093649109164286.
The purpose of this investigation was to compare intersegmental knee and hip forces for below-knee amputee (BKA) and able-bodied children during standing. Three unilateral BKA children and 10 able-bodied children (7-9 years) were tested on four separate occasions at six month intervals. Three trials of external force and spatial data during standing were collected from each subject for each session. These data were utilised to determine the intersegmental forces at the knees and hips of the children using a static force analysis. Results indicated that in some instances the intersegmental forces for the BKA children were significantly greater than those of the able-bodied children and in other instances significantly lower (p less than 0.05). In all cases, however, the values were substantially less than corresponding values for walking and running. The effects of the forces upon spatial orientations indicated significant differences between the two groups of children. The frontal plane prosthetic knee angle, the sagittal plane prosthetic and non-prosthetic knee angles, and the sagittal plane trunk angle were all greater for the BKA children when compared to able-bodied children. These differences may be the result of the anatomical structure of the amputee and/or the construction of the prosthesis.
本研究的目的是比较膝下截肢儿童（BKA）和健全儿童在站立时的节段间膝关节和髋关节受力情况。三名单侧BKA儿童和十名健全儿童（7至9岁）在六个月的间隔内分四次接受测试。每次测试时，从每个受试者收集三次站立时的外力和空间数据。利用这些数据，通过静态力分析确定儿童膝关节和髋关节的节段间力。结果表明，在某些情况下，BKA儿童的节段间力显著大于健全儿童，而在其他情况下则显著低于健全儿童（p小于0.05）。然而，在所有情况下，这些数值都远低于行走和跑步时的相应数值。力对空间定向的影响表明两组儿童之间存在显著差异。与健全儿童相比，BKA儿童的额状面假肢膝关节角度、矢状面假肢和非假肢膝关节角度以及矢状面躯干角度都更大。这些差异可能是截肢者的解剖结构和/或假肢构造的结果。
