Tehran University of Medical Sciences (TUMS) Academic Journal of Surgery 2423-3218 5 1-2 2018 03 08 28 29 Seyed Esmail Hassanpour Professor, Department of Plastic Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Abdolreza Rouientan Assistant Professor, Department of Plastic Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Iraj Pourahmadian Plastic and Reconstructive Surgeon, Department of Plastic Surgery, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran Hojjat Molaei Assistant Professor, Department of Plastic Surgery, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2018 10 01 Background: Syndactyly, as one of the most common congenital hand abnormalities, requires surgical repair according to various approaches. Case Report: We report a 28-year-old man with simple syndactyly in his third web. Conclusions: The common concern is about skin defect coverage, and we illustrated in a mathematical objective survey, if distance between to phalanxes’ center was more than 1.5 times diameter (each of phalanxes), then there would not necessary to use skin graft. https://ajs.tums.ac.ir/index.php/ajs/article/view/151 https://ajs.tums.ac.ir/index.php/ajs/article/download/151/99