新生儿膝后曲是一种少见的先天性疾病,主要特征为出生时即存在膝关节韧带松弛,膝关节过度伸展可达90°。据报道新生儿生长发育膝后曲常能自行恢复。但是此病患儿初生时常高度怀疑为先天畸形,是否影响婴儿今后的肢体功能及需否即刻矫形治疗 Neonatal kyphosis is a rare congenital disease characterized by laxity of the knee ligament at birth and an over-extension of the knee joint of up to 90 °. It is reported that newborn growth and development of the knee can often resume their own song. However, the newborn is often highly suspected of congenital malformations, whether it affects the infant’s future physical function and the need for immediate orthopedic treatment