Verhaar, Jan, Sjoerd Bulstra, and Geert Walenkamp. “Silicone Arthroplasty for Hallux Rigidus Implant Wear and Osteolysis”. Acta Orthopaedica 60, no. 1 (January 1, 1989): 30–33. Accessed May 10, 2026. https://actaorthop.org/actao/article/view/22525.