1. Departments of Molecular and Integrative Physiology; University of Michigan; Ann Arbor Michigan 48109-2200Michigan 48109-2200
2. Departments of Orthopaedic Surgery; University of Michigan; Ann Arbor Michigan 48109-2200
3. Hospital for Special Surgery; New York New York
4. Departments of Mechanical Engineering; University of Michigan; Ann Arbor Michigan 48109-2200
5. Departments of Biomedical Engineering; University of Michigan; Ann Arbor Michigan 48109-2200
6. Departments of Macromolecular Science and Engineering; University of Michigan; Ann Arbor Michigan 48109-2200