LAUSR

Abstract Rationale: Avascular necrosis (AVN) of the metacarpal head is rare, and there is no clear consensus on treatment. The main aim of this study was to discuss the possible pathologic-mechanics of its development, epidemiology, radiographic features, and outcome after conservative treatment. Patient concerns: A 14-year-old male with a history of fractures in little finger complained of right-hand pain with a limited range of motion for 1 month. Diagnosis: Imaging examination confirmed the diagnosis of AVN in the long metacarpal finger and ring finger. Interventions: The patient was treated using non-surgical management, such as splint immobilization, non-steroidal anti-inflammatory drugs, and physiotherapy. Outcomes: At the last follow-up 26 months later, the patient was in complete remission with no residual symptoms. Magnetic resonance imaging (MRI) confirmed excellent remodeling and regeneration in the metacarpal head. Lessons: Metacarpal head necrosis typically occurs in adolescent patients with a history of trauma. Conservative treatment may sometimes have an excellent prognosis.