Evaluation of an ambulatory system for gait analysis in hip osteoarthritis and after total hip replacement. - Aminian,K.; Trevisan,C.; Najafi,B.; Dejnabadi,H.; Frigo,C.; Pavan,E.; Telonio,A.; Cerati,F.; Mrinoni,E.C.; Robert,P.H.; Leyvraz,P.F. (Gait Posture, 2004)