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.

ABSTRACT:

Background and purpose

 Patellofemoral 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).

Methods

Data 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.

Results

 PFA patients were more often female (72%) than TKA (62%) and UKA (51%) patients and had

SUBMITTER: Omenas HN 

PROVIDER: S-EPMC12404100 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature