Inclusion Criteria:  X-ray or computed tomography (CT) diagnosis of adolescent transitional ankle fracture. After manual reduction, the displacement of both ends of the epiphyseal plate or articular surface fracture in any direction was still > 2 mm; the arthrography-assisted joystick technique was used for treatment.  Exclusion Criteria:  Bilateral fracture. In association with epiphyseal dysplasia and neuromuscular disease.