Background: Range of Motion after total knee arthroplasty is an important factor measuring of the outcome and is crucial factor all of rating knee system. Our study was down to identify the most important factors that related with postoperative Range of Motion.
Materials and Methods: We studied prospectively patients (68 knees) who had a primary total knee arthroplasty at the same center between 2000-2002. Ten preoperative factors (age, sex, extension lag, flexion contracture, flexion arc, tibiofemoral angle, body mass index, cause of joint destruction, prosthesis type about PCL retention or substitution, history of high tibial osteotony) were used to predict postoperative Range of Motion.
Results & Conclusion: We used correlation analysis tree to identify the preoperative factors predicting the postoperative Range of Motion. The significant factors were preoperative Range of Motion, preoperative tlexion contracture and body mass index.