Population-based 10-year cumulative revision risks after hip and knee arthroplasty for osteoarthritis to inform patients in clinical practice: a competing risk analysis from the Dutch Arthroplasty Register

Background and purpose — A lifetime perspective on revision risks is needed for optimal timing of arthroplasty in osteoarthritis (OA) patients, weighing the benefit total hip arthroplasty/total knee (THA/TKA) against risk revision, after which outcomes are less favorable. Therefore, we provide population-based 10-year cumulative stratified by joint, sex, fixation type, age. Patients methods Data from Dutch Arthroplasty Register (LROI) was used. Primary THAs TKAs OA between 2007 2018 were included, except metal- on-metal prostheses or hybrid/reversed hybrid fixation. Revision surgery defined as any change 1 more prosthesis components. The calculated age, at primary arthro- plasty, type (cemented/uncemented), taking into account mortality a competing risk. We estimated percentage potentially avoidable revisions assuming all patients aged < 75 received THA/TKA 5 years later while keeping age-specific constant. Results 214,638 211,099 31% 95% cemented. varied 1.6% 13%, with higher younger age categories. Delaying placement could avoid 23 (3%) THA 162 (17%) TKA revi- sions. Interpretation Cumulative 10- year considerably both groups, may be communicated to used guide surgery.