J Korean Orthop Assoc.  1972 Mar;7(1):147-150. 10.4055/jkoa.1972.7.1.147.

A Case of Bilateral Congenital Clasped Thumb

• Kim KS
• Kim HS

• KMID: 2463859
• DOI: http://doi.org/10.4055/jkoa.1972.7.1.147

Abstract

Congenital clasped thumb is an unusal condition characterized by the thumb being held tightly beneath the flexed fingers in such a way that it cannot escape for normal prehension. New-born infants frequently hold their thumbs beneath their flexed fingers. If the flexed thumb persists and normal independent action of the thumb does not develop third or fourth month after birth, congenital clasped thumb is suggested. It is the result of failure of normal developmenl of the muscles and tendinous structures that provide extension for the thumb and fingers at the metacarpophalangeal joint. The deformity also includes volar soft tissue contractures of digits in varying degrees of severity. Since first description of Zadek in 1934 for bilateral thumb extensor agenesis. total 48 cases of congenital clasped thumb have been reparted throughout the world. A case of bilateral congenital clasped thumb with bilateral calcaneo-varus deformity in one month-old boy was diagnosed and treatment with prospect of complete funtional recovery.

MeSH Terms

Congenital Abnormalities
Contracture
Fingers
Humans
Infant
Male
Metacarpophalangeal Joint
Muscles
Parturition
Thumb*
United Nations