The aim of this study is to evaluate the efficacy of the use of the dynamic hip orthosis in subjects who are affected with degenerative hip diseases, even those who are waiting for a total hip replacement, and in subjects who had undergone a hip replacement because of a proximal femur fracture. For each patient we’ve prepared a card in which we’ve reported personal data, comorbidities, pharmacological and rehabilitative treatments, VAS, WOMAC, Barthel Index, GDS and a evaluation of the compliance. We’ve evaluated those patients periodically. Until now, and considering the follow up is not ended, we can say that the dynamic hip orthosis can be addressed to patients with mild to moderate hip osteoarthritis and in elderly who’ve been undergone surgery for a proximal femur fracture because it reduces pain, it facilitates a safer gait and it accelerates the functional recovery. However it is important the dynamic hip orthosis to become a part of an individualized rehabilitative project.