Background The nail matrix is a unique structure, and usually nail matrix defects over 2–3 mm are very difficult to repair. The aim of this article was to repair larger nail matrix defects by a modified A‐T advancement flap to avoid nail deformity. Method Surgery was performed on 22 fingers with melanonychia and nail splitting. Nail matrix defects were repaired by a modified A‐T advancement flap. The results of the procedure were evaluated by postoperative scarring, nail ridges, nail curvature and gloss, and satisfaction. Patients were followed for 4–48 months. Results The average score for nail appearance and morphology was 5.39 points (maximum six points). The average overall satisfaction score was 0.91 (maximum one point). The difference in preoperative and postoperative nail width was significantly less than the width of the excised nail matrix. Conclusion This procedure produced good results in terms of nail appearance and morphology for the nail matrix defect.
Du et al. (Thu,) studied this question.