PROSTHETIC ALIGNMENT EFFECTS ON GAIT SYMMETRY - A CASE-STUDY
PROSTHETIC ALIGNMENT EFFECTS ON GAIT SYMMETRY - A CASE-STUDY
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DOI：
10.1016/0268-0033(90)90043-6
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发表时间：
1990-05-01
影响因子：
1.8
通讯作者：
STIMMEL, SK
中科院分区：
文献类型：
--
作者：
ANDRES, RO;STIMMEL, SK
下肢的重要部分的丧失导致人类截肢的通常模式的改变。这些变化已被记录的运动学，动力学和代谢，使洞察截肢的成本相对于走动的努力。假肢师的作用是提供肢体替代物，以实现最佳步态性能，同时确保患者的最大舒适度。本病例研究通过比较解剖侧和假体侧，检查了膝下假体前后对线对矢状面步态运动学的影响。最大的变化，由于对齐的变化被发现在假体的立场阶段，膝关节角度显示出最大的不对称性之间的解剖和假体方面。由于早期膝关节屈曲和脚趾离地，假体侧的站立相减少，关节窝前移位。髋臼后移位导致最大重心高度增大，而髋臼前移位导致膝关节屈曲度增大，最大重心高度减小。时间和其他运动学参数的不对称性并不总是最小的最佳对齐主观选择的认证假肢。不对称比率与假体侧数据的比较揭示了该截肢者对前后对线差异的亚临床敏感性。
The loss of a significant portion of a lower extremity causes changes in the usual pattern of human ambulation. These changes have been documented kinematically, kinetically and metabolically, giving insight into the costs of limb amputation relative to ambulatory efforts. The role of the prosthetist is to provide a limb substitute to achieve the best gait performance, while assuring maximum comfort for the patient. This case study examined the effects of antero-posterior alignment of a below-knee prosthesis on sagittal plane gait kinematics by comparing the anatomical side with the prosthetic side. The greatest changes due to variations of alignment were found during the prosthetic stance phase; knee angles showed the greatest asymmetry between anatomical and prosthetic sides. The stance phase on the prosthetic side was reduced with anterior socket displacement due to early knee flexion and toe-off. Posterior socket displacement caused a greater maximum centre of gravity height, but anterior socket displacement caused greater knee flexion which decreased the maximum centre of gravity height. Asymmetries in temporal and other kinematic parameters were not always minimal at the optimal alignment subjectively selected by a certified prosthetist. Comparisons of asymmetry ratios with prosthetic side data revealed the subclinical sensitivity of this amputee to antero-posterior alignment discrepancies.