Heikkinen, Erkki S., Jaakko Puranen, and Ilkka Suramo. “The Effect of Intertrochanteric Osteotomy on the Venous Drainage of the Femoral Neck in Perthes’ Disease”. Acta Orthopaedica 47, no. 1 (January 1, 1976): 89–95. Accessed May 30, 2026. https://actaorthop.org/actao/article/view/29337.