Congenital Familial Clinodactyly of Index Finger with Proximal Delta Phalanges and Ulnar Deviation

摘要

Congenital clinodactyly can occur in familial, syndromic, or sporadic forms. The majority of familial cases of clinodactyly are inherited as an autosomal dominant trait, and involvement of the index finger with ulnar deviation is extremely rare. A 4-year-old girl presented to the plastic surgery clinic for evaluation of bilateral index finger deformities. There was substantial overriding of the second and third digits (Fig. 1A, B). Physical examination revealed marked ulnar deviation of the bilateral index fingers originating at the angulated proximal phalanx, as well as mild radial deviation of the bilateral fifth digits. While the patient's mother was phenotypically normal, the patient's maternal grandmother had index finger clinodactyly.