Thumb polydactyly with symphalangism in young children.

@article{Takagi2009ThumbPW,
  title={Thumb polydactyly with symphalangism in young children.},
  author={Ritsuo Takagi and Hidehiko Kawabata and Yoshinobu Matsui},
  journal={The Journal of hand surgery, European volume},
  year={2009},
  volume={34 6},
  pages={800-4}
}
Six cases of young children with thumb polydactyly in which the radial component was complicated by symphalangism are reported. Since the symphalangism was cartilaginous, plain X-rays showed an apparent joint space. However, its continuity was confirmed at surgery. Thumb polydactyly with symphalangism may be more common than previously expected.