Factors influencing taper failure of modular revision hip stems

The numbers of revisions of both primary and revision hip implantations are steadily increasing [1]. Revision rates for first revision at 10 years in national arthroplasty registries of between 3% and 20% are reported [2 –10]. Revision rates of primary implantations in the same registries are much lower (between 2% and 4% if metal-on-metal bearing articulations are omitted) [6,64]. Revision implantation is more challenging than a primary procedure as bone stock has often been lost due to stress shielding and the o perative removal of the primary implant and the cement mantle, mostly in the proximal region.
Source: Medical Engineering and Physics - Category: Biomedical Engineering Authors: Source Type: research