Affiliation: | 1. Department of Orthopaedic Surgery, Thomas Jefferson University Hospital, 1025 Walnut Street, College Building Rm. 516, Philadelphia, PA 19107, USA;2. Department of Mechanical Engineering, Temple University, 1947 N. 12th Street, Philadelphia, PA 19122, USA;3. Rothman Institute Orthopaedics, 925 Chestnut St., 5th Floor, Philadelphia, PA 19107, USA |