1. K Kulig, PT, PhD, is Associate Professor of Clinical Physical Therapy, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 E Alcazar St, CHP-155, Los Angeles, CA 90033 (USA)
2. SF Reischl, PT, DPT, OCS, is Adjunct Associate Professor of Clinical Physical Therapy, Division of Biokinesiology and Physical Therapy, University of Southern California
3. AB Pomrantz, PT, DPT, OCS, ATC, is Adjunct Instructor of Clinical Physical Therapy, Division of Biokinesiology and Physical Therapy, University of Southern California
4. JM Burnfield, PT, PhD, is Director, Movement Sciences Center, and Clifton Chair in Physical Therapy and Movement Science, Institute for Rehabilitation Science and Engineering, Madonna Rehabilitation Hospital, Lincoln, Nebraska
5. S Mais-Requejo, PT, DPT, OCS, is Adjunct Assistant Professor of Clinical Physical Therapy, Division of Biokinesiology and Physical Therapy, University of Southern California
6. DB Thordarson, MD, is Professor of Orthopedic Surgery, Department of Orthopedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California
7. RW Smith, MD, is Orthopedic Foot and Ankle Surgeon, Long Beach Memorial Medical Center, Long Beach, California