de Laat Fred A, van der Pluijm Mark J, van Kuijk Annette A, Geertzen Jan H, Roorda Leo D
J Rehabil Res Dev. 2014;51(10):1545-54. doi: 10.1682/JRRD.2014.03.0068.
Despite numerous advantages, knee disarticulations (KDs) are rarely performed because of the anticipated KD prosthesis fitting problems that include the positioning of the knee joint distally from the KD socket. This results in lengthening of the thigh and subsequent shortening of the shank. The objective of this study was to assess the cosmetic effect of the knee joint in a KD prosthesis by determining the extent of the lengthening of the thigh and the shortening of the shank. This lengthening and shortening were measured through an experimental setup using laser techniques. These measurements were made of 18 knee joints used in KD prostheses. Lengthening of the thigh varied between 23 and 92 mm, and shortening of the shank varied between 3 and 50 mm. The polycentric knees Medi KH6 and Medi KHF1 showed the least lengthening of the thigh, and the polycentric knees Teh Lin Prosthetic & Orthotic Co. Ltd Graph-Lite and Medi KP5 showed the least shortening of the shank.
尽管膝关节离断术（KDs）有诸多优点，但由于预期的KD假体适配问题，包括膝关节在KD承窝远端的定位问题，该手术很少进行。这会导致大腿延长，进而小腿缩短。本研究的目的是通过确定大腿延长和小腿缩短的程度，评估KD假体中膝关节的美容效果。这种延长和缩短是通过使用激光技术的实验装置进行测量的。这些测量是对18个用于KD假体的膝关节进行的。大腿延长在23至92毫米之间，小腿缩短在3至50毫米之间。多中心膝关节Medi KH6和Medi KHF1的大腿延长最少，而多中心膝关节德林义肢矫形有限公司Graph-Lite和Medi KP5的小腿缩短最少。
