This study uses 14 years of Nationwide Inpatient Sample data (1990-2003) and Poisson regression to project U.S. primary and revision hip and knee arthroplasty demand through 2030. It answers how much arthroplasty volume will grow — and whether constant or time-varying prevalence models best capture that growth. Projections are stratified by age, sex, race/ethnicity, and census region.
Every orthopedic resident should know these numbers: 3.48 million TKAs and 572,000 THAs annually by 2030. These projections are why the specialty has invested heavily in surgical training capacity, OR throughput, and alternative payment models for joint replacement.
When you see policy discussions about bundled payments, CJR programs, or outpatient arthroplasty expansion, this paper is the quantitative foundation. The projected volume surge forces a rethinking of where and how efficiently these cases can be done.
Revision volume deserves equal attention. Knee revisions were projected to double by 2015 and grow sixfold by 2030. This is why revision arthroplasty training, implant longevity research, and implant registries have become strategic priorities.
The key methodologic lesson: projections that assume stable utilization rates dramatically underestimate demand. The actual uptake of TKA was rising steeply year over year, and any model that ignores that trend will be off by 2-5 times at a 25-year horizon.
This study uses 14 years of Nationwide Inpatient Sample data (1990-2003) and Poisson regression to project U.S. primary and revision hip and knee arthroplasty demand through 2030. It answers how much arthroplasty volume will grow — and whether constant or time-varying prevalence models best capture that growth. Projections are stratified by age, sex, race/ethnicity, and census region.
Every orthopedic resident should know these numbers: 3.48 million TKAs and 572,000 THAs annually by 2030. These projections are why the specialty has invested heavily in surgical training capacity, OR throughput, and alternative payment models for joint replacement.
When you see policy discussions about bundled payments, CJR programs, or outpatient arthroplasty expansion, this paper is the quantitative foundation. The projected volume surge forces a rethinking of where and how efficiently these cases can be done.
Revision volume deserves equal attention. Knee revisions were projected to double by 2015 and grow sixfold by 2030. This is why revision arthroplasty training, implant longevity research, and implant registries have become strategic priorities.
The key methodologic lesson: projections that assume stable utilization rates dramatically underestimate demand. The actual uptake of TKA was rising steeply year over year, and any model that ignores that trend will be off by 2-5 times at a 25-year horizon.