1　患儿 ,男 ,5岁 ,父母叙述出生后即发现右足拇趾及第二趾粗大并较左侧稍长 ,随年龄增长 ,上述第一、二趾增粗肥大臃肿 ,尤以第二趾为甚 ,Ｘ光片显示 :右足第一、二趾骨骼增生过盛 ,巨趾畸形累计第一足庶骨。追问家族史患儿的父母及家属均未发现上述先天畸形。患儿 10个月大时 1 children, male, 5 years old, the parents described the birth after the discovery of the right toe and second toe thick and slightly longer than the left, with age, the first and second toe fat hypertrophy bloated, especially the second toe To be more, X-ray film shows: right foot first, second toe hyperplasia overgrown, giant toe deformity accumulated the first foot slab bone. Asked the family history of children with their parents and their families did not find the congenital malformations. Children 10 months old