ArticleActa orthopaedica2025
Patellofemoral arthroplasty-patient demographics and revision causes compared with total and medial unicompartmental knee arthroplasty: long-term follow-up data from the Norwegian Arthroplasty Register.
Article in Acta orthopaedica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Patellofemoral vs. total knee arthroplasty for isolated patellofemoral osteoarthritis: evidence-based recommendations from a systematic review with GRADE assessment.Archives of orthopaedic and trauma surgery · 2026Pooled it
- Peg Shearing as a Method of Failure in Highly Cross-Linked Polyethylene Patellar Components Used in Patellofemoral Arthroplasty.Arthroplasty today · 2026Article
- Patellofemoral Joint Replacement for Isolated Patellofemoral Osteoarthritis: Mid- to Long-Term Survivorship and Functional Outcomes.Journal of personalized medicine · 2026Article
- A two to fifteen year follow-up case series of ninety one patients after onlay patellofemoral arthroplasty highlighting the impact of preoperative symptoms and mental health.International orthopaedics · 2026Article
- A narrative review of clinical research on knee osteoarthritis in 2025.Annals of joint · 2026Review
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5 authors.
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Abstract
background and purposePatellofemoral arthroplasty (PFA) is a rare surgical procedure for isolated patellofemoral osteoarthritis (PFOA). This study compares patient demographics, long-term survival rates, revision risks, and causes of revision in PFA with total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA).
methodsData from the Norwegian Arthroplasty Register (NAR) (1994-2022) included 725 PFA, 102,135 TKA, and 14,315 UKA procedures. We used Kaplan-Meier (KM) analysis to calculate implant survival at 2, 5, 10, and 15 years and Cox regression adjusted for confounders to assess revision risks. Revision causes were analyzed for procedures after 2005.
resultsPFA patients were more often female (72%) than TKA (62%) and UKA (51%) patients and had a lower mean age (54.3 for PFA, 69.0 for TKA, and 65.6 for UKA). At 10 years, KM survival was 85% (95% confidence interval [CI] 80.6-88.2) for PFA, 94% (CI 93.8-94.2) for TKA, and 84% (CI 83.6-85.1) for UKA. Among patients < 60 years, KM survival at 10 years was 84% (CI 79.4-88.1) for PFA, 90% (CI 89.3-90.4) for TKA, and 79% (CI 77.1-80.3) for UKA. In patients < 60 years with < 10 years' follow-up, the adjusted hazard ratios (HR) for revision were 0.9 for TKA and 1.7 for UKA compared with PFA. Adjusted HR for > 10 years' follow-up showed lower revision risks for TKA with 0.3 and no significant difference for UKA (HR 0.9). Progression of OA was the leading cause of revision in PFA (49%).
conclusionPFA was predominantly performed in younger female patients. In patients < 60 years, PFA showed similar 10-year survival to TKA but inferior survival after 15 years. Revision rates for PFA are comparable to UKA but inferior to TKA.
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