Mid-term Results of Total Knee Arthroplasty Using PFC Sigma RP-F
- Author:
Jun Young KIM
1
;
Sang Ho CHEON
;
Hee Soo KYUNG
Author Information
1. Department of Orthopaedic Surgery, Kyungpook National University School of Medicine, Daegu, Korea. hskyung@knu.ac.kr
- Publication Type:Original Article
- Keywords:
Total knee arthroplasty;
Sigma RP-F mobile model;
Mid-term result;
High-flexion implant
- MeSH:
Arthroplasty;
Follow-Up Studies;
Knee;
Range of Motion, Articular
- From:The Journal of Korean Knee Society
2012;24(4):221-226
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: We compared the mid-term results after total knee arthroplasty (TKA) using PFC Sigma RP-F mobile model with PFC Sigma PS fixed model. MATERIALS AND METHODS: We analyzed 45 knees that underwent TKA with PFC Sigma RP-Fn (study group) and 45 knees with PFC Sigma PS (control group). The mean follow-up period was 65 months (range, 60-69 months). The evaluation system of the American knee society was used for clinical and radiological assessment. Also, the maximal knee flexion angle was assessed. RESULTS: The mean maximum flexion angle in the study group (135degrees) was greater than that in the control group (125degrees) at the early post-operation & final follow-up period (p=0.033). The range of motion (ROM) in the study group was recovered earlier at the postoperative 6 months, and ROM gain was improved to a greater extent at the final follow-up period (p=0.039). The knee score and function score and radiographic evaluation were no difference between the two groups (p>0.05) at the final follow-up. The two cases of radiolucency in posterior condyle and medial tibial plateau and one case of patellar elongation were seen in the study group. CONCLUSIONS: The PFC Sigma RP-F mobile system appears to facilitate greater maximum flexion angle and ROM gain with two cases of radiolucent line.
