[1] Univ Tennessee, Campbell Clin, Dept Orthopaed Surg & Biomed Engn, Hlth Sci Ctr, 1211 Union Ave,Suite 510, Memphis, TN 38104 USA
[2] Beth Israel Lahey Hosp, 41 Mall Rd, Burlington, MA 01805 USA
[3] Nanaimo Orthopaed, 201-1515 Dufferin Crescent, Nanaimo, BC V9S 5H6, Canada
[4] Campbell Clin Fdn, 1211 Union Ave,Suite 510, Memphis, TN 38104 USA