1Department of Foot & Ankle Specialty , Orthopaedic Associates of Michigan, PC , 1111 Leffi ngwell Ave. NE, Ste 100 , Grand Rapids , MI 49525 , USA
2Department of Orthopaedic Surgery , Grand Rapids Medical Education Partners in Association with Michigan State University College of Human Medicine , 200 Jefferson Ave. SE, Ste 305 , Grand Rapids , MI 49503 , USA