Ehrendorfer, Stefan, Garry Lequesne, Mario Penta, Paul Smiths, and Peter Cundy. “Bilateral Synovitis in Symptomatic Unilateral Transient Synovitis of the Hip: An Ultrasonographic Study in 56 Children”. Acta Orthopaedica 67, no. 2 (January 1, 1996): 149–152. Accessed May 13, 2026. https://actaorthop.org/actao/article/view/20961.