Modified Zigzag Nail Bed Flap with Three Rotations as a Therapeutic Approach in Congenital Malalignment of the Great Toenail

Congenital malalignment of the great toenail is rare and often causes nail deformity. When these complications of transverse overcurvature and retronychia occur, the degree of improvement with the conventional surgical approach is significantly limited for nail deformities or recurrence. We present a case of a 22-year-old woman with congenital malalignment of the great toenail associated with retronychia and transverse overcurvature. We describe the application of the zigzag nail bed flap with three rotations in congenital malalignment of the great toenail, modifying the original approach according to the patient's multiple nail deformities, while achieving satisfactory results. To our knowledge, there is no report of this in the literature.