1. Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana, USA
2. Purdue School of Engineering and Technology, Purdue University–Indianapolis, Indianapolis, Indiana, USA
3. Department of Orthopaedic Surgery, Heersink School of Medicine, University of Alabama–Birmingham, Birmingham, Alabama, USA
4. Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA
5. Department of Orthopaedic Surgery, University of Michigan School of Medicine, Ann Arbor, Michigan, USA
6. Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, Indiana, USA