Digital sucking induced trophic ulcers caused by nerve deficit from amniotic constriction band.

Two infants presented with amniotic constriction bands (ACB) in the distal third of the forearm. After teeth eruption they developed recurrent skin ulcerations mainly in the distribution of the median nerve from digital sucking. Both patients underwent reconstruction with multiple Z-plasties, followed by neurolysis of the ulnar nerve and sural nerve grafting of the median nerve. This neurological complication presented late in ACB as ulcerative lesions and secondary infection from digital sucking on the insensate digits. Thorough physical examination of the extremities at an early stage in children with ACB is essential to exclude an occult neurological dysfunction. Exploration of peripheral nerves is warranted in cases of deep forearm ACB during their soft tissue reconstruction.