Biomedical Engineering and Bioengineering Commons^™

Finite Element Analysis (Fea) Of The Taper-Trunnion Interface In A Metal On Metal Hip Implant, Kyle M. Bradley, Timothy L. Norman, Thomas K. Fehring

The Research and Scholarship Symposium (2013-2019)

Metal on metal total hip replacements are a common procedure in which the hip joint is replaced with a metal stem, a metal femoral head and a metal socket, usually made of titanium or cobalt chromium. The stem has a tapered region (trunnion) where the femoral head is impacted onto. This creates what is known as the taper-trunnion interface within a hip implant. However, these hip implants seem to be very susceptible to fretting corrosion, where the corrosive fluid environment of the body accelerates the process of wear between two contact surfaces. Previous research has suggested that the design parameters …