title: Four-Year Follow Up Outcome Study of Patellofemoral Arthroplasty at a Single Institution.
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 4.1 years (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.
authors: Department of Orthopedic Surgery, Singapore General Hospital, Singapore.
authors: Graham Seow-Hng
authors: GS
authors: Goh
authors: Department of Orthopedic Surgery, Singapore General Hospital, Singapore.
authors: Ming Han Lincoln
authors: MH
authors: Liow
authors: Department of Orthopedic Surgery, Singapore General Hospital, Singapore.
authors: Darren Keng-Jin
authors: DK
authors: Tay
authors: Department of Orthopedic Surgery, Singapore General Hospital, Singapore.
authors: Ngai Nung
authors: NN
authors: Lo
authors: Department of Orthopedic Surgery, Singapore General Hospital, Singapore.
authors: Seng Jin
authors: SJ
authors: Yeo
mesh_terms: D000328:Adult; D000368:Aged; D001168:Arthritis / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000706:statistics & numerical data*; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010146:Pain / Q000601:surgery; D010329:Patella / Q000601:surgery; D057071:Patellofemoral Joint / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome
keywords: expectation; outcomes; patellofemoral arthroplasty; satisfaction; survivorship