Engebretsen, Lars, Elizabeth Arendt, and Hollis M Fritts. “Osteochondral Lesions and Cruciate Ligament Injuries: MRI in 18 Knees”. Acta Orthopaedica 64, no. 4 (January 1, 1993): 434–436. Accessed May 4, 2026. https://actaorthop.org/actao/article/view/21780.