1Orthopaedic Research Center, The Cleveland Clinic, Cleveland, OH 44195, USA
2Department of Biomedical Engineering, The Cleveland Clinic, Lerner Research Institute, 9500 Euclid Ave., Cleveland, OH 44195, USA
3Department of Orthopaedic Surgery, The Cleveland Clinic, Cleveland, OH 44195, USA
2National Center for Microgravity Research, Case Western Reserve University, Cleveland, OH 44195, USA
3Department of Anatomic Pathology, The Cleveland Clinic, Cleveland, OH 44195, USA