Abstract
Four good quality randomized clinical trials comparing patellar resurfacing versus noresurfacing in knee arthroplasty are analyzed. The outcomes evaluated were anterior knee pain, scores on the Knee Society’s rating system and reoperation. No relevant differences were found in knee scores, but anterior knee pain was less frequent in patients with patellar resurfacing. Few patients had severe anterior knee pain. Still, patients with anterior knee pain were less satisfied with the clinical result. Studies with longer follow-up showed that anterior knee pain increased with time in both groups. A clinically relevant increase in reoperation rate in the nonresurfaced group could not be excluded with the numbers available. Anterior knee pain seems to be influenced by the decision of resurfacing the patella during knee arthoplasty. Although it is not associated with important changes in knee scores, patients perceive it as a cause of insatisfaction. Influence of patellar resurfacing on implant supervivence is not clear.
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