Vanpaemel, Lieve, Paul J M Helders, Wietse Kuis, Hans Pruijs, Jonne Huber, and Willem Keessen. “Destructive Synovitis in Contralateral Perthes; Disease: A Report of 2 Cases”. Acta Orthopaedica 65, no. 6 (January 1, 1994): 585–588. Accessed May 13, 2026. https://actaorthop.org/actao/article/view/21599.