Reconstruction of the failed acetabular component using cemented shells and impaction grafting in revision hip arthroplasty.

Overview

Cemented revision techniques have been used with variable success in the reconstruction of the failed acetabular component. Diminished cement-bone interlock secondary to diminished cancellous bone quality and quantity may contribute to the observed high rates of aseptic loosening of this construct in the revision setting. Nevertheless, this technique may still be an option in the elderly patient with limited function or life expectancy. Impaction bone grafting in conjunction with cemented acetabular cups has been reported to result in good midterm results. The reconstruction is challenging and tedious and requires meticulous execution for success. When performed well, impaction grafting can result in survivorship rates equaling those seen using cementless hemispheric cups with the additional advantage of increasing acetabular bone stock.