Broad distal phalanx of thumb

May Be Caused by

Acrocephalopolysyndactyly

Acrocephalosyndactyly Pfeiffer type

Apert syndrome

Familial brachydactyly B

Familial brachydactyly D

Mesomelic dysplasia Robinow type

Otopalatodigital syndrome type 2

Rubinstein-Taybi syndrome

Syndactyly