Corrosion at the head-neck interface of current designs of modular femoral components: essential questions and answers relating to corrosion in modular head-neck junctions.

摘要: There is increasing global awareness of adverse reactions to metal debris and elevated serum ion concentrations following the use second generation metal-on-metal total hip arthroplasties. The high incidence these complications can be largely attributed corrosion at head-neck interface. Severe taper identified most commonly in association with larger diameter femoral heads. However, there emerging evidence varying levels observed retrieved components smaller This same mechanism galvanic mechanically-assisted crevice has been metal-on-polyethylene ceramic components, suggesting an inherent biomechanical problem current designs We provide a review fundamental questions answers clinicians researchers must understand regarding taper, its relevance orthopaedic practice. Cite this article: Bone Joint J 2016;98-B:579-84.