[1] Univ Calif San Francisco, Dept Orthopaed Surg, San Francisco, CA 94143 USA
[2] Case Western Reserve, Orthopaed Res Soc ORS Advocacy Comm, Cleveland, OH USA
[3] Case Western Reserve, Dept Biomed Engn, Cleveland, OH USA
[4] Penn State Univ, Bone & Joint Inst, Hershet, PA USA
[5] Univ Calif Irvine, Dept Radiol Sci, Irvine, CA 92717 USA
[6] Univ Delaware, Dept Bioengn, Newark, DE USA
[7] Thomas Jefferson Univ, Dept Orthopaed Surg, Philadelphia, PA 19107 USA
[8] Johns Hopkins Univ, Dept Orthopaed Surg, Baltimore, MD USA