1 Biodynamics Lab, Department of Orthopaedic Surgery, University of Pittsburgh, 3820 South Water Street, Pittsburgh, PA, 15203, USA.
2 Department of Physical Therapy, University of Pittsburgh School of Health and Rehabilitation Sciences, Suite 210, 100 Technology Drive, Pittsburgh, PA, 15219, USA.
3 Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, UPMC Rooney Sports Complex, 3200 South Water Street, Pittsburgh, PA, 15203, USA.
4 Steadman Philippon Research Institute, Vail, CO, USA.
5 Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, 431 80, Mölndal, Gothenburg, Sweden.
6 Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, UPMC Rooney Sports Complex, 3200 South Water Street, Pittsburgh, PA, 15203, USA. musahlv@upmc.edu.