Determination of local micromotion at the stem-neck taper junction of a bi-modular total hip prosthesis design

Numerous retrieval studies have documented clinical failure of modular total hip arthroplasties following corrosion and material loss [1, –3]. Metal debris from corroding taper junctions released into the periprosthetic tissue of the patient's body leads to elevated serum metal ion levels. These can potentially trigger various symptoms including pseudo-tumour formation [4,5], osteolysis [6] or substantial soft-tissue necrosis [7], c ausing severe pain followed by implant instability and therefore requiring revision surgery.

Source: Medical Engineering and Physics - January 22, 2019 Category: Biomedical Engineering Authors: Adrian Falkenberg, Paul Drummen, Michael M. Morlock, Gerd Huber Source Type: research