CO2 Laser Matricectomy for the Treatment of Pincer Nail Deformity: A Retrospective Cohort Study.

Background: Pincer nail deformity (PND) is a common toenail disorder characterized by transverse over-curvature of the nail plate. It can cause severe pain, chronic inflammation, and recurrent infections. Both conservative and surgical treatment options carry different disadvantages of limited efficacy, high recurrence rate, and poor cosmetic outcome.