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The Journal of Bone & Joint Surgery British Volume
Vol. 93-B, Issue 10 | Pages 1427 - 1430
1 Oct 2011
Lindgren JU Brismar BH Wikstrom AC

A 70-year-old man with an uncemented metal-on-polyethylene total hip prosthesis underwent revision arthroplasty 33 months later because of pain, swelling and recurrent dislocation. There appeared to be corrosion and metal release from the prosthetic head, resulting in pseudotumour formation and severe local soft-tissue destruction. The corrosion occurred at the junction between the titanium-molybdenum-zirconium-iron taper and the cobalt-chrome-molybdenum head, but the mechanism was unproven.