Fracture of the cone of a morse taper junction in revision arthroplasty of the hip

Since the mid-1980s, there has been a dramatic increase in the use of modular THA designs.Surgeons adopted head-neck modularity for the intraoperative advantages of adjusting leg length and femoral offset and neck-stem modularity for the opportunity to further fine-tune hip biomechanics and femoral anteversion.Fretting, crevice and galvanic corrosion, component loosening, and mismatch have all been associated with the use of modular prostheses in primary and revision hip arthroplasty.Dissociation and fracture of modular femoral neck prosthesis are rare and underestimated complications in modular THA.We report the first case of a fracture of the cone of the morse taper junction of a MRP Titan revision stem.