Management of fingernail deformities after thermal injury.

Fingernail deformities after thermal injury can be very disfiguring and troublesome. The fingernails may be discoloured, cleft or vertically deviated. From the pathophysiology of the nail growth in general, the specific features of the nail deformities after deep burn can be deduced, as can guidelines for the treatment. Over a two-year period, 153 patients with burned hands were treated in the Groningen Burn Centre. Seven of these patients developed abnormal quality and growth pattern of the fingernails. In two patients an effort was made to correct the deformity by incising the dorsal skin at the base of the nail fold, reflecting the nail fold and covering the acquired defect with a full thickness skin graft. Although the patients were satisfied with the results achieved, one year after the operation little or no improvement in the nail growth was found. A cautious policy should be followed in correcting these deformities, since dislocation of the eponychium together with damage to the nail matrix and the nail bed play a complex role in the process of deformation.