We report a case of juvenile recurrent posterior dislocation of the elbow with an avulsed cartilage fragment. The avulsed fragment from the lateral condyle gradually became larger since the initial dislocation, and was ossified. After three dislocations, the avulsed bone fragment was secured with screws and the anterior capsule was repaired. Elbow function recovered without any dislocation after the avulsion fracture healed. Open reduction and internal fixation of the avulsed fragment is worth trying at first for juvenile recurrent elbow dislocation, even in chronic cases.