1. Department of Orthopaedic Surgery, UPMC Pinnacle, Harrisburg, PA, USA
2. Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, MD, USA
3. Department of Orthopaedic Surgery, University of Maryland, Baltimore, MD, USA
4. Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA