Abstract
Patellofemoral arthroplasty (PFA) is an option for younger patients with isolated patellofemoral arthritis. Older PFAs had high failure rates due to poor design. This retrospective study reports the outcomes of PFA at a single institution using a second-generation implant. Fifty-one patients (51 knees) with isolated patellofemoral arthritis underwent PFA. Mean follow-up was 4.1years (range, 2.2–6.1). Mean Knee Society objective and function scores, Oxford Knee score, Melbourne Knee score and Physical Component Score improved significantly. 76% had their expectations fulfilled and 76% experienced good satisfaction. Mean Insall–Salvati and Caton–Deschamps ratios increased significantly. Two wound infections (3.92%) were encountered. Survivorship was 92.2% with four revisions, two due to progression of arthritis, one due to patella maltracking, and one due to anterior knee pain.
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