Conflicts of Interest The authors declare no conflicts of interest. Supporting Information Filename Description jor26072-sup-0001-SupFigure1.tiff1.2 MB SUPPORTING FIGURE 1. No direct association was observed between muscle quality and OA severity. References 1, , , and , “The Burden of Hip Osteoarthritis in the United States: Epidemiologic and Economic Considerations,” Journal of the American Academy of Orthopaedic Surgeons 21 (2013): S1.