1. Musculoskeletal Imaging & Spectroscopy Laboratory, Hospital for Special Surgery, New York, New York.
2. Department of Radiology and Imaging, Hospital for Special Surgery, New York, New York.
3. North Shore/LIJ Medical Center, New Hyde Park, New York.
4. Outcomes Research, Hospital for Special Surgery, New York, New York.
5. Ryaby Associates LLC, Scottsdale, Arizona.