Chan, R. N. W., and J. P. Pollard. “High Tibial Osteotomy for Rheumatoid Arthritis of the Knee: A One to Six Year Follow-Up Study”. Acta Orthopaedica 49, no. 1 (January 1, 1978): 78–84. Accessed April 26, 2026. https://actaorthop.org/actao/article/view/29085.