Radiographic features of Wu et al. type A2 congenital thumb duplication and implications for management: new subtypes and surgical strategies - Wu, JianPing; Liao, ShiJie; Li, YuQuan; Xu, FuLong; Zhao, Hai; Li, ChenYang; Liu, YanHan; Zhi, XinWang; Lin, HongHong; Tu, ZheHui; Shu, LiLi; Li, JingChun; et al. (Frontiers in Pediatrics, 2025)