Utilization rates of knee arthroplasty in OECD countries revised

Growth to 2022 has fallen short of the earlier 2015 projection. Still, utilization remains on an upward trajectory, with a growing share of procedures among younger patients, now accounting for >50% of volume. Cross-country variation has narrowed vs. our earlier analysis, with lower volume countries catching up. Obesity remains associated with higher utilization, with the strengths of this association varying by national income. Post-COVID-19 recovery patterns are consistent with sustained demand and higher relative contribution from younger, lower-risk populations.