Engsberg J R, Lee A G, Patterson J L, Harder J A
Human Performance Laboratory, University of Calgary, Alberta, Canada.
Arch Phys Med Rehabil. 1991 Aug;72(9):657-61.
The purpose of this investigation was to determine external loading variables that could describe any statistically significant differences between the limbs of below-knee-amputee (BKA) and able-bodied children. Eleven able-bodied children and four BKA children volunteered to participate in this investigation. Force platform data were collected for two consecutive foot falls during two experimental sessions. Significant external load differences existed between the prosthetic limbs and nonprosthetic limbs of BKA children and between limbs of the BKA and able-bodied children. The prosthetic limb generally displayed a subordinate role when compared to nonprosthetic and normal limbs. The nonprosthetic limbs displayed a dominant role when compared to the other limbs. These external loading characteristics of the prosthetic and nonprosthetic limbs may be a logical consequence of the morphologic and functional differences that exist between the groups. It was concluded that as long as the prosthetic limb functions differently from a normal limb, BKA children may have a difficult time walking the same as able-bodied children. It would appear to be advantageous to determine the most appropriate gait pattern for BKA children, given the influence of such factors as prosthetic design, construction, and alignment, rehabilitation, and joint loading.
本研究的目的是确定外部负荷变量，以描述膝下截肢（BKA）儿童与健全儿童肢体之间的任何统计学显著差异。11名健全儿童和4名BKA儿童自愿参与本研究。在两个实验环节中，连续收集两次足部着地时的测力平台数据。BKA儿童的假肢肢体与非假肢肢体之间以及BKA儿童与健全儿童的肢体之间存在显著的外部负荷差异。与非假肢和正常肢体相比，假肢肢体通常表现出次要作用。与其他肢体相比，非假肢肢体发挥着主导作用。假肢和非假肢肢体的这些外部负荷特征可能是两组之间形态和功能差异的必然结果。得出的结论是，只要假肢肢体的功能与正常肢体不同，BKA儿童就可能难以像健全儿童一样行走。考虑到假肢设计、构造和对线、康复以及关节负荷等因素的影响，确定BKA儿童最合适的步态模式似乎是有利的。
