Analysis of the stem-sleeve interface in a modular titanium alloy femoral component for total hip replacement

Abstract

Modular femoral components for total hip arthroplasty have been clinically available since the 1980s. Despite the widespread use of interlocking tapers in hip prostheses, researchers have raised concerns about fretting and wear, which has been clinically observed at the tapered modular interface of retrieved femoral heads and the trunnions, as well as at the stem-sleeve junctions of retrieved femoral stems. Fretting may play an important role in the mechanics of the stem-sleeve interface of a modular titanium alloy femoral component. However, the interface mechanics of the stem-sleeve junction are currently not well understood. © 2001 Trans Tech Publications.