We investigated whether handedness is influenced by the presence of a congenital hand difference (CHD). Among 31 children with right-sided CHDs, 13 were left-handed and 18 were right-handed, regardless of severity. This was significantly different from the normal population, suggesting that CHD does influence handedness.
Christopher Jones, Kara Lekuse, Orla Duncan, Wee Leon Lam. The effect of congenital hand differences on handedness in children. The Journal of hand surgery, European volume. 2024 Feb;49(2):270-271
PMID: 37747723
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