From the Department of Orthopaedic Surgery, Sports Medicine, Indiana University, Indianapolis, IN (Klott, Smith, and Klitzman), and the Indiana University School of Medicine, Indianapolis, IN (Hunter).

None of the following authors or any immediate family member has received anything of value from or has stock or stock options held in a commercial company or institution related directly or indirectly to the subject of this article: Klott, Smith, Hunter, and Klitzman.