复拇指为正常拇指位置上存在２个大小、形态相似的手指，且都具有一定的功能，虽为多指畸形的一种，但又有别于手部桡侧多指畸形。国外曾有报道多指发生率为１／３００～１／３０００，桡侧多指占２／３，未见复拇指发病率的报道［１］。小儿复拇指治疗时机及整复方法是否准确 There are two sizes and similar shapes of fingers in normal thumb position, and all of them have some functions. Although they are multi-finger deformities, they are different from multi-finger deformities on the radial side of hands. Foreign reports have referred to the incidence of more than 1/300 ~ 1/3000, more than 2/3 on the radial finger, no evidence of the incidence of complex thumb [1]. Fold thumb treatment of children and the timing of the restoration method is accurate