Authors experienced a rare injury in a 5-year-old girl with Monteggia fracture and concomitant lateral condyle fracture of humerus with radial nerve injury. This combined injury has not been reported in the literature. This unusual fractures were treated by open reduction and K-wire fixation of lateral condyle fracture and transcapitellar K-wire fixation of radial head dislocation. An excellent result was obtained with operative treatment.