Investigation performed at the Department of Orthopaedic Surgery, University of Tennessee College of Medicine, Erlanger Medical Center, Chattanooga. \\\\\* 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 Orthopaedics, Erlanger Medical Center, 975 East Third Street, Chattanooga, Tennessee 37403.*** Tennessee Orthopaedic Associates, 301 21st Avenue North, Nashville, Tennessee 37203.