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KMID : 0359620120240040221
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Journal of Korean Knee Society
2012 Volume.24 No. 4 p.221 ~ p.226
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Mid-term Results of Total Knee Arthroplasty Using PFC Sigma RP-F
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Kim Jun-Young
Cheon Sang-Ho
Kyung Hee-Soo
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Abstract
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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 (135°) was greater than that in the control group (125°) 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.
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KEYWORD
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Total knee arthroplasty, Sigma RP-F mobile model, Mid-term result, High-flexion implant
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