1. Orthopaedic Robotics Laboratory, Center for Biotechnology and Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
2. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
3. Department of Sports Medicine, Kameda Medical Center, Kamogawa, Japan.
4. Department of Clinical Anatomy, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
5. Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
6. Department of Orthopedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
7. Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
8. Foot and Ankle Injury Research (FAIR) Group, Division of Foot and Ankle Surgery, Department of Orthopedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.