\\\\\* No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article. No funds were received in support of this study.** Department of Orthopaedic Surgery, University of Nebraska Medical Center, 600 South 42nd Street, Omaha, Nebraska 68198-1080.*** Department of Orthopaedic Surgery, Mayo Clinic, 200 First Street. S.W., Rochester, Minnesota 55905.