From the Department of Orthopaedic Surgery, San Francisco Orthopaedic Residency Program (Rowland, and Kondrashov), the Biomechanical Lab, The Taylor Collaboration (Raji), the Department of Orthopaedic Surgery, St. Mary's Medical Center, San Francisco, CA (Nelles, and Kondrashov), and the Department of Orthopaedic Surgery, Kaiser Permanente, Oakland, CA (Jang).

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: Rowland, Raji, Nelles, Jang, and Kondrashov.