Resection of one slip of the flexor digitorum superficialis resulting finger deformity in pediatric trigger finger: a case report

Pediatric trigger finger (PTF) is a rare hand disorder caused by various anatomic abnormalities and systemic illnesses. We report a case of PTF in a 16-month-old boy, revealing a flexion deformity of his right middle finger. We noted an abnormally proximal location of Camper’s chiasm and bulging of the flexor digitorum profundus intraoperatively. We released the A1 pulley completely and resected an ulnar slip of the flexor digitorum superficialis (FDS). The short-term outcome was satisfactory; however, the patient experienced a mild flexion deformity and ulnar deviation of the right middle finger at a 4-year follow-up visit. During reexploration, we noted severe scar adhesion along the previously cut end of the ulnar slip of the FDS. Therefore, we performed en-bloc scar tissue release with additional resection of the remaining radial slip of the FDS. To prevent recurrence after PTF release, close monitoring with short-term follow-up and early physiotherapy should be emphasized.