Delayed Presentation of a Flexor Digitorum Profundus Avulsion Injury: A Case Report.

Avulsion of the flexor digitorum profundus (FDP) tendon is a relatively common injury in athletes. Also known as "jersey finger," it can also occur in nonathletes, and is often not initially diagnosed. Early diagnosis and repair are essential to regaining optimum return of function. We report a case of a 37-year-old woman who was seen six weeks following an undiagnosed FDP avulsion injury. Due to finger stiffness and the delayed diagnosis, she was treated with occupational therapy to maximize finger range of motion. The anatomy, classification, diagnosis, and treatment options for FDP avulsion injuries are discussed. The goal of this paper is to increase awareness for this injury, resulting in early diagnosis and prompt treatment.