Malchau, Henrik, Peter Herberts, and Lennart Ahnfelt. “Prognosis of Total Hip Replacement in Sweden: Follow-up of 92,675 Operations Performed 1978–1990”. Acta Orthopaedica 64, no. 5 (January 1, 1993): 497–506. Accessed May 25, 2026. https://actaorthop.org/actao/article/view/21756.