Peripheral nerve palsy associated with congenital constriction band syndrome.

Of 21 patients with congenital constriction band syndrome treated in our clinic from 1967 to 1988, four had constriction bands proximal to the wrist. Three of these also had a peripheral nerve palsy. Late surgical decompression does not help but early diagnosis, using electrodiagnosis methods, and neurolysis or nerve grafting as soon as possible may improve nerve function.