Nomura Tomohiro, Watanabe Kota, Nosaka Toshiya, Matsubara Hiroyuki, Akiyama Masaharu, Inui Kimiharu
Department of Prosthetics and Orthotics, Hokkaido University of Science, Japan; Graduate School of Health Sciences Sapporo Medical University, Japan.
Graduate School of Health Sciences Sapporo Medical University, Japan.
J Phys Ther Sci. 2016 Jan;28(2):576-9. doi: 10.1589/jpts.28.576. Epub 2016 Feb 29.
[Purpose] It is difficult to identify by visual observation whether alignment abnormalities in trans-femoral prostheses in the frontal plane are attributable to the adduction angle or the abnormal alignment of the positions of the medial and lateral sides of the socket in relation to the foot. Therefore, we focused on the trajectory of the center of plantar pressure during walking, and we proposed a method for differentiating these two alignment abnormalities. [Subjects and Methods] We recruited 4 trans-femoral unilateral amputees. Bench alignment was achieved initially. We compared the amplitude of the trajectory of the center of plantar pressure when walking under 2 conditions: 1) when changing the adduction angle and 2) when changing the positional relationship between the socket and the foot. [Results] It was not possible to distinguish between the 2 types of malalignment on the prosthesis side. There was a significant difference when changing the positional relationship on the contralateral side. Thereby, the plantar pressure of the contralateral side could be used to distinguish between the 2 types of malalignment. [Conclusion] The results of this study suggested that trans-femoral prosthesis malalignment could be evaluated through the plantar pressure of the contralateral side in amputees.
[目的] 通过视觉观察很难确定经股骨假体在额状面的对线异常是归因于内收角度还是相对于足部而言，接受腔内侧和外侧位置的对线异常。因此，我们关注行走过程中足底压力中心的轨迹，并提出了一种区分这两种对线异常的方法。[对象与方法] 我们招募了4名单侧经股骨截肢者。最初实现了台架对线。我们比较了在两种情况下行走时足底压力中心轨迹的幅度：1）改变内收角度时；2）改变接受腔与足部之间的位置关系时。[结果] 无法在假体侧区分这两种对线不良类型。在对侧改变位置关系时有显著差异。由此，对侧的足底压力可用于区分这两种对线不良类型。[结论] 本研究结果表明，截肢者经股骨假体对线不良可通过对侧的足底压力进行评估。
