Computational stress analysis of cup replacement hip arthroplasty

A two-dimensional finite element model of a total surface replacement hip arthroplasty was utilized to study the performance characteristics of the prosthesis by means of stress analysis. No significant changes occur in stress field distribution following resurfacing arthroplasty in the proximal femur. Local bending phenomena appear to occur in the femoral component under static loading. Prosthesis-cortical bone continuity at the femoral neck does not affect stress field distribution. Finally, trochanteric osteotomy causes a change in the stress field distribution of the proximal femur that may be a significant factor in femoral neck fracture.