On-Top-Plasty for Atypical Thumb Duplication: A Case Report With 10Year Follow-up

摘要

>Background: A very uncommon pattern of thumb duplication consists of an ulnar-side floating thumb and a radial-side distally hypoplastic thumb. >Methods: We report the case of a 15-month-old child with this type of thumb duplication on his right hand treated with an on-top-plasty technique. The ulnar-side segment was pedicled and transferred to the lateral thumb, which was distally resected. >Results: A well-aligned and widely mobile thumb with a wide first web and an excellent cosmetic appearance was exhibited 10 years after surgery. >Conclusions: On-top-plasty technique might be amenable to reconstruct certain atypical thumb duplications.