Radiological case of supr...

A 46 years old female was dashed by a car from behind while crossing the road. The mechanism of injury followed a direct fall on the right elbow. She experienced sudden onset of severe pain followed by an inability to move the entire arm.she underwent a radiological diagnostic procedure which demonstrated Type-IV fracture (A) according to the Gartland classification of supracondylar fracture. The patient was showing complete restriction in elbow movement with pronation and supination of the forearm extremely painful.Suggest appropriate diagnosis and treatment plan?