Løken S, Heir S, Holme I, Engebretsen L, Årøen A. 6-year follow-up of 84 patients with cartilage defects in the knee. ActaO [Internet]. 2010 Oct. 1 [cited 2024 Nov. 4];81(5):611-8. Available from: https://actaorthop.org/actao/article/view/11102