Debonding of porous coating of a threaded acetabular component: Retrieval analysis

Abstract

This report presents a case of debonding of plasma sprayed porous titanium coating from threaded acetabular component which caused aseptic loosening of the implant. Weigh bearing after delamination caused abrasive damage of the acetabular shell, and particles c the coating embedded in the acetabular liner. Microscopic examination of periprostheti tissues showed presence of metal particles and macrophage infiltration. Despite micro-scopic examination of the retrieved component the cause of debonding remains unclear. © 2012 Elsevier Ltd.