A 10-year-old boy presenting with a cubitus varus deformity and a history of trauma 3 months back on clinical examination, has the preserved 3 bony point relationship of the elbow. The most probable diagnosis is
Old unreduced dislocation of elbow Non-union lateral condylar fracture of humerus Malunited intercondylar fracture of humerus Malunited supracondylar fracture of humerus