[1] IRCCS Ist Ortoped Rizzoli, Movement Anal Lab, Via Barbiano 1-10, I-40136 Bologna, Italy
[2] Univ Iowa, Dept Orthoped & Rehabil, Iowa City, IA USA
[3] Univ Iowa, Orthoped Funct Imaging Res Lab, Iowa City, IA USA
[4] Duke Univ, Dept Orthoped, Durham, NC USA