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Comparative Analysis between Patellar Resurfacing and Retention in Total Knee Arthroplasty: 5-year Follow-up Result

Purpose: To compare the clinical and radiological results between patellar resurfacing, group and patellar retention group in total knee arthroplasty. Materials and Methods: Of the 74 patients who underwent total knee arthroplasty on due to knee osteoarthritis since March 1996, and followed-up for at least for 5 years, there were 42 and 32 cases in the patellar retention and patellar resurfacing groups respectively. These subjects were evaluated preoperatively and at 1 and 5 years postoperatively using the pain score, Hospital for Special Surgery (HSS) knee score, walking and stair-climbing in knee function score and radiological analysis. The radiological evaluation was achieved by measuring the patellar tilt angle and displacement with a merchant view. The results were analyzed using the student,s t-test. Results: There were no significantly differences between the patellar resurfacing and patellar retention groups in the pain score, HSS knee score, walking in knee function score and radiological analysis (p>0.05), but the patellar retention group achieved superior results in stair-climbing (p