title: 50 years ago in CORR: spine bifida occulta in Legg-Calvé-Perthes disease. Jacob F. Katz, CORR 1959;14:110-118.
authors.affiliation: Clinical Orthopaedics and Related Research, 1600 Spruce Street, Philadelphia, PA 19103, USA. dick.brand@clinorthop.org
authors.forename: Richard A
authors.initials: RA
authors.lastname: Brand
mesh_terms: D049673:History, 20th Century; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000266:history*; D016135:Spinal Dysraphism / Q000266:history*