“…In 1974, Dinham and Meggitt established treatment guidelines for trigger deformity, specifically, that (1) a trigger deformity that is present at birth should be carefully observed for twelve months, (2) a trigger deformity that is first noticed between the ages of six and thirty months should be observed for six months, and (3) operative treatment should be performed before the age of four years to prevent the creation of residual flexion deformities 3 . However, Skov et al later concluded that the risk of residual flexion deformity was no higher following operations conducted in patients who were more than three years old, supporting initial nonoperative treatment regardless of age 20 . Several conservative approaches to the treatment of pediatric trigger thumb with use of splints have been described by Japanese groups [10][11][12][13] , with success rates ranging from 48% to 89%.…”