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Background: Trigger finger is a rare condition in children and it is even more uncommon in the 5th finger. The etiology of Trigger finger includes congenital cases, which are the most common and usually affects the thumb; posttraumatic cases, more frequent after penetrating injury; and tumoral cases. Methods: In this paper, we report a post-traumatic trigger finger on a 2-year-old girl who was seen in our clinic complaining of triggering in her small left finger, following a slight contusion. As far as we know there is no previous report of this condition involving the fifth finger in toddlers. Conclusions: The natural history of pediatric trigger finger is poorly characterized due to the small number of retrospective cases series available. Based on our experience, the methodology to be followed would be, after a thorough history and after ruling out concomitant pathology, if a congenital trigger finger in a child come into our clinic, the most successful resolution is release of the A1 pulley.