Fractography of a Neck Failure in a Double-Modular Hip Implant
The tapered joints of modular hip implants are prone to fretting and crevice-corrosion. This can lead to total failure in under a year, especially for heavier, more active implant recipients. In this study, fractography of a failed Profemur Z implant showed that a life limiting fatigue crack was nucleated on the anterolateral surface of the implant's neck. The fatigue crack nucleation area appeared to have both more fretting damage and a higher corrosion rate than on other surfaces of the neck.
- Author (aut): Williams, Jason
- Author (aut): Chawla, Nikhilesh
- Contributor (ctb): Ira A. Fulton Schools of Engineering