1Florida Orthopaedic Institute, 13020 Telecom Parkway, Temple Terrace, FL 33673. E-mail address for D. Herscovici Jr.: firstname.lastname@example.org. 2Department of Orthopaedics, Indiana University School of Medicine, Indianapolis, IN 46202. 3Department of Orthopaedics, University of Cincinnati Medical Center, Cincinnati, OH 45267. 4Department of Orthopaedics, University of Texas Southwestern Medical Center, Dallas, TX 75390.An Instructional Course Lecture, American Academy of Orthopaedic Surgeons.