John R Fowler1, Mark E Baratz2. 1. Department of Orthopaedics, University of Pittsburgh; and Orthopaedic Specialists, University of Pittsburgh Medical Center; Pittsburgh, PA. Electronic address: johnfowler10@gmail.com. 2. Department of Orthopaedics, University of Pittsburgh; and Orthopaedic Specialists, University of Pittsburgh Medical Center; Pittsburgh, PA.