Fig. 1From: Correction osteotomy for bilateral varus knee deformity caused by premature epiphyseal closure induced by hypervitaminosis A: a case reportAbnormalities after long-term treatment for neuroblastoma using isotretinoin, a vitamin A derivative. a Medial physical arrests of both distal femoral physes and distal tibial physes. b Bending of both femoral necks and deformities of both femoral heads. c Both first metatarsal bones are shortBack to article page