关键词: 全膝关节置换, 股骨, 后髁偏距, 活动范围

Abstract: Objective To explore the stabilized total knee arthroplasty effects on early functional changes of condylar offset. Methods 121 cases of posterior stabilized total knee arthroplasty in our hospital from Jan.2013 to Jan.2016 were enrolled in the study. All patients with preoperative and postoperative posterior condylar offset records, according to the changes of femoral condylar offset were divided into A group and B group. The patients in the two groups were followed for at least 12 months, and the differences in the Osteoarthritis Index score (WOMAC), the American Knee association score (KS), HSS score and knee function were compared. Results After surgery, two patients in the anterior condylar offset changes, femoral prosthesis flexion angle, tibial angle, tibial angle difference was not statistically significant (P > 0.05). But after 1 years, the improvement of WOMAC score, HSS score and weight-bearing active flexion range in group A was better than that in group B, the difference was statistically significant (P < 0.05). Conclusions The reconstruction of the posterior condylar offset can improve the stability after total knee arthroplasty in patients with early osteoarthritis symptoms, and enhance the active flexion range of patients with weight-bearing, which has some clinical value.

Key words: Total knee arthroplasty, femur, posterior condylar offset, range of motion