1. Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery Massachusetts General Hospital Boston Massachusetts USA
2. Foot & Ankle Service, Department of Orthopaedic Surgery Massachusetts General Hospital Boston Massachusetts USA
3. Foot & Ankle Service, Newton‐Wellesley Hospital, Harvard Medical School Massachusetts General Hospital Boston Massachusetts USA
4. Department of Orthopaedics and Rehabilitation, Foot and Ankle Surgery University of Iowa Iowa City Iowa USA
5. Department of Orthopedic Surgery, Amsterdam Movement Sciences (AMS) Amsterdam University Medical Centers Amsterdam The Netherlands