[Escalator flap in the treatment of claw nail].

Nail horn deformity can be corrected by a proximal withdrawal of the nail complex on the distal remaining skeleton. The main problem is the flap coverage and we have combined an "in bloc" O'Brien island flap with the withdrawal of the nail. This "escalator" technique allowed a good correction with a satisfactory palmar skin cover and a decreased "wave" of the dorsal skin.