Digit Transposition in Reconstruction of Asymmetric Radial Polydactyly-Report of Three Cases

Background: Asymmetric type polydactyly usually cannot be easily classified or reconstructed. Ordinary reconstruction procedures may not satisfactorily preserve the joint stability, musculoskeletal function and thumb appearance. Aim and objectives: Here, we describe a digit transposition procedure used in three cases with unusual asymmetric polydactyly and discuss the indications and results of digit transposition.Materials and Methods:Three children (two boys and one girl) received digit transposition due to asymmetric type radial polydactyly. The mean age at reconstruction was 3.6 years (range, 3-4 years). The follow-up period ranged from one to five years. Results: All thumbs had a stable MCP joint and preserved musculoskeletal function for pinch. Besides, cosmetic outcomes were achieved. Conclusion: Digit transposition provides a stable joint, a functional thumb and cosmetic appearance for reconstruction of asymmetric radial polydactyly.