Force and motion analysis of the normal, diseased, and prosthetic ankle joint.
Force and motion analysis of the normal, diseased, and prosthetic ankle joint.
复制标题
正常、患病和假肢踝关节的力和运动分析。
DOI：
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发表时间：
1977
影响因子：
4.2
通讯作者：
R. Brewster
中科院分区：
文献类型：
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作者：
R. N. Stauffer;E. Chao;R. Brewster
对正常受试者以及踝关节疾病患者在全踝关节置换术前和术后1年进行了步态期间踝关节的二维运动和力的研究。所采用的方法包括使用高速电影胶片、测力板和脚踏开关数据。基于准静态分析，确定了跟腱和胫前肌腱力，以及步态站立阶段踝关节的压缩力和切向（剪切）力。在步态站立阶段，正常受试者矢状面踝关节平均活动24.4度。踝关节疾病患者活动度降低，在全踝关节置换术后1年恢复到接近正常水平。在站立阶段后期，踝关节的压缩力上升到约5倍体重。在除了最后20%的站立阶段期间，都显示有向后或尾部的剪切力，几乎达到全身重量。踝关节疾病患者显然改变了他们的步态以显著降低这些力。在全踝关节置换术后，剪切力恢复到更接近正常的值，但压缩力没有显著变化。
A 2-dimensional motion and force study of the ankle joint during gait has been carried out on normal subjects and patients with ankle joint disease, before and 1 year following total ankle replacemetn. The methods employed involved the use of high-speed motion picture film, force plate and foot-switch data. The Achilles and anterior tibial tendon forces, the compressive and tangential (shear) forces across the ankle during stance phase of gait were determined, based on a quasi-static analysis. During stance phase of gait normal subjects used a mean of 24.4 degree of sagittal plane ankle motion. Patients with ankle joint disease showed reduced motion which returned to near normal values 1 year following total ankle replacement. Compressive force across the ankle joint rose to about 5 times body weight during the latter part of stance phase. Backward, or aft, shear forces or nearly full body weight were demonstrated during all but the last 20% of stance phase. Patients with ankle joint disease apparently altered their gait to markedly reduce these forces. Following total ankle replacement, shear forces returned toward more normal values, but compressive forces were not significantly changed.