Sydney Orthopaedic Research Institute, Chatswood, New South Wales, Australia.
Bone Joint Res. 2013 Jan 1;2(1):1-8. doi: 10.1302/2046-3758.21.2000130. Print 2013 Jan.
There remains a lack of data on the reliability of methods to estimate tibial coverage achieved during total knee replacement. In order to address this gap, the intra- and interobserver reliability of a three-dimensional (3D) digital templating method was assessed with one symmetric and one asymmetric prosthesis design.
A total of 120 template procedures were performed according to specific rotational and over-hang criteria by three observers at time zero and again two weeks later. Total and sub-region coverage were calculated and the reliability of the templating and measurement method was evaluated.
Excellent intra- and interobserver reliability was observed for total coverage, when minimal component overhang (intraclass correlation coefficient (ICC) = 0.87) or no component overhang (ICC = 0.92) was permitted, regardless of rotational restrictions.
Measurement of tibial coverage can be reliable using the templating method described even if the rotational axis selected still has a minor influence.
目前，在全膝关节置换术中评估胫骨覆盖度的方法的可靠性数据仍然缺乏。为了解决这一差距，评估了一种三维（3D）数字模板方法的观察者内和观察者间可靠性，该方法使用了一种对称和一种非对称假体设计。
共有 120 个模板程序是由三位观察者在零时和两周后根据特定的旋转和悬垂标准进行的。计算了总覆盖度和分区覆盖度，并评估了模板和测量方法的可靠性。
当允许最小的组件悬垂（组内相关系数（ICC）= 0.87）或没有组件悬垂（ICC = 0.92）时，即使允许旋转限制，总覆盖度的观察者内和观察者间可靠性均非常好。
即使选择的旋转轴仍有一定影响，使用所描述的模板方法也可以可靠地测量胫骨覆盖度。
