One of the major concerns in the use of modular hip prostheses is the structural failure of one or more components of the prosthesis, with total mechanical failure. In literature there are sporadic cases of breakage of the prosthetic neck in patients with high functional demand. In our experience we have implanted a model of modular hip prostheses in 38 patients. In 17 of these patients it was implanted a neck made of titanium alloy, while in the remaining 21 was utilised a CrCo neck. In 5 of the 17 patients with neck titanium it has been a spontaneous rupture of the neck in a time ranging from 12 to 24 months. We proceeded with the replacement of the titanium neck with similar neck made of CrCo alloy in 5 patients with failed neck, and we decided to call the remaining 12 patients with titanium neck, offering them the revision of the system. All patients accepted the revision surgery.Introduction
Material and methods
