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  • Title: [Patella reshaping versus resurfacing in total knee arthroplasty: a prospective randomized study].
    Author: Liu ZT, Wu YL, Li XH, Qian QR, Zhu YL, Wu HS.
    Journal: Zhonghua Wai Ke Za Zhi; 2007 Aug 15; 45(16):1087-90. PubMed ID: 18005604.
    Abstract:
    OBJECTIVE: To investigate the differences in the clinical outcome of total knee arthroplasty according to patellar reshaping or resurfacing. METHODS: From January 2002 to December 2002, 60 patients (60 knees) undergoing primary total knee arthroplasty for the treatment of osteoarthritis were enrolled in a prospective, randomized study. All patients received the same posterior-cruciate-substituting total knee prosthetic components. Patients were randomized to the treatment with reshaping or resurfacing of the patella, and the results were followed up for a mean of 54 months (40-60 months). Evaluations consisted of the determination of a Knee Society Score, range of motion for knees, patient satisfaction, and radiographs. RESULTS: With the numbers available for study, no significant difference was found between the knees that had patellar resurfacing and those that had patellar reshaping with regard to the overall score (P=0.12), the subscore for pain (P=0.90), and patient satisfaction (P=0.22). The results showed that the same prevalence of any anterior knee pain in two groups was 10%, and it did not represent a significant difference. The two groups showed statistical difference with regard to the total function score and range of motion. CONCLUSIONS: It has shown that total knee arthroplasty with patella reshaping or resurfacing dramatically relieves pain and improves the function. It seems that postoperative anterior knee pain is related either to the component design or to the details of the surgical technique, rather than to whether or not the patella is resurfaced.
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