YRJÖNEN, Timo. Prognosis in Perthes’ disease after noncontainment treatment. Acta Orthopaedica, [S. l.], v. 63, n. 5, p. 523–526, 1992. DOI: 10.3109/17453679209154728. Disponível em: https://actaorthop.org/actao/article/view/22063. Acesso em: 20 may. 2026.