title: Femoral head at risk factors in Legg-Perthes disease.
mesh_terms: D005269:Femur; D005271:Femur Head Necrosis / Q000628:therapy*; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000145:classification / Q000175:diagnosis / Q000628:therapy*; D012306:Risk