The nomenclature of the elbow triad of terror is defined as a dislocation of the elbow joint combined with damage to the joint ligaments and a fracture of the ulnar coronoid process. It is called the triad of terror because a dislocation of the joint can lead to damage to the ligaments and a fracture of the coronoid process, which are the devices that maintain the stability of the joint. If all three devices are damaged, the elbow joint becomes unstable and frequently dislocates. Frequent dislocations can wear away the cartilage around the elbow joint, leading to osteoarthritis and joint instability, and dislocations can occur with slight force. This is a medical headache, so it is called the elbow joint terror triad.