Walker Peter S, Haider Hani
Department of Orthopaedic Surgery, New York University Medical Center, New York, USA.
Clin Orthop Relat Res. 2003 May(410):54-68. doi: 10.1097/01.blo.0000063599.67412.44.
The purposes of determining the motion of a total knee replacement in vitro are to characterize the stability and laxity characteristics and to predict the kinematic behavior of the total knee replacement when implanted. With this information, different total knee replacement designs can be compared, the stability of the implanted knee replacement with and without the retention of ligaments can be assessed, and tests can be formulated to measure the wear and deformation of the materials, the strength of the components, and the fixation to the bone. Initially, different ways are described for characterizing the kinematics of the natural knee. We propose a rationale for the kinematic testing of total knee replacements in vitro using mechanical tests. One of the key questions is whether there is an objective method of measuring the kinematics of a total knee replacement in vitro, which will relate to or predict its behavior in vivo.
在体外确定全膝关节置换物运动的目的是表征其稳定性和松弛特性，并预测植入后全膝关节置换物的运动行为。利用这些信息，可以比较不同的全膝关节置换设计，评估保留韧带和不保留韧带时植入的膝关节置换物的稳定性，还可以制定测试来测量材料的磨损和变形、部件的强度以及与骨的固定情况。首先，描述了表征自然膝关节运动学的不同方法。我们提出了一种使用机械测试在体外对全膝关节置换物进行运动学测试的基本原理。关键问题之一是是否存在一种客观的方法来测量体外全膝关节置换物的运动学，这种方法将与它在体内的行为相关或预测其在体内的行为。
