Interface corrosion of a modular head total hip prosthesis

Wear and corrosion products released from metallic prosthetic joints can stimulate adverse reactions in the surrounding tissues that may eventually require revision of the prosthesis.12 The authors report here a case of a modular total hip prosthesis removed after 35 months that showed evidence of corrosion and fretting at the Morse taper interface between the titanium alloy femoral stem and the cobalt-chromium ball.