Surgeon Volume and Differences in Rates of Primary Total Knee Arthroplasty Across 3 US States

Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA. This work is supported by the Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health (ZIA-AR-041153). The author has no financial conflicts of interest related to this work. Address correspondence to Dr. M.M. Ward, NIAMS/NIH, Building 10CRC, Room 4-1339, 10 Center Drive, Bethesda, MD 20892-1468, USA. Email: wardm1@mail.nih.gov.