[Deformities of the fingers secondary to fingersucking].

After prolonged finger-sucking in early infancy, skeletal digital deformities, especially of the index finger, may occur. Thumb-sucking causes primarily dental disturbances whereas prolonged index--sucking may deform this finger, with functional as well as aesthetic consequences on the grip. Acquired rotation of the index finger is the most frequent deformity and does not always resolve spontaneously so that a rotation osteotomy had to be performed in 3 cases.