A case of traumatic dislocation of proximal radial epiphysis is reported, which was diagnosed 5 months after a posterior dislocation of the elbow in a 9 years old girl. Open reduction and fixation of the avascular epiphysis to the metaphysis was performed, and after 24 months follow-up the physis was vascularised and flexion ranged from 0-130°, pronation 80° and supination 30°.