Learmonth, Ian D, et al. “Unpredictable Progression of Osteolysis Following Cementless Hip Arthroplasty 24 Femoral Components Followed for 6–10 Years”. Acta Orthopaedica, vol. 67, no. 3, Jan. 1996, pp. 245-8, doi:10.3109/17453679608994681.