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10 9 8 7 6 5 4 3 2 1 The ropture of part of the prosthesis can be associated with fracture or not. When is not is not simple to identify with the routinal x-ray exam and sometime is associated with pain. The usure of the component also is not infrequent after trauma or fracture. In this case the patient need a second surgery for the sobstitution of the broken component or the whole revision of the prosthesys. Aseptic loosening is the most serious late complication of THA. It is an event that corresponds to the death of the prosthesis. “Loosening” is generally defined as progressive migration of a prosthetic implant over time, which can be demonstrated by repeated radiographic studies, or as the appearance of a circumferential radiolucent line with a width of 2 mm or more that surrounds the cement or a component on an X-ray film. If aseptic loosening occurs, it should be managed by revision arthroplasty to replace the loosened component. Once a component has become loose, the bone around it is destroyed progressively. Consequently, it is desirable to perform revision arthroplasty before the bone loss becomes excessive. Over time, however, a hip replacement can fail for a variety of reasons. When this occurs, your doctor may recommend that you have a second operation to remove some or all of the parts of the original prosthesis and replace them with new ones. The lifetime risk of revision for male patients aged 50–54 years is 29·6% compared with 7·7% for their counterparts aged 70–74 years . This large risk differential may lead some patients to delay surgery. Revision hip replacement refers to the exchange of one or more components of the prosthetic hip. Associated with greater complications and poorer functional outcomes than primary hip replacement, the procedure is only indicated when serious adverse symptoms, including pain or fracture, have occurred or are predicted.