Intercondylar fracture of the humerus with severe pain, widespread pressure pain, and significant swelling after trauma to the elbow joint, which may be accompanied by subcutaneous bruising. It is a fracture that occurs between the medial and lateral condyles of the humerus and their adjacent parts. It may also be caused by upward impact of the ulnar hawkbone when the elbow joint is in the flexed position and strikes the ground directly. The ulnar hawk is triangular in cross-section, and when violence is transmitted to this part, the ulnar hawk is like a wedge striking the slide groove between the medial and lateral condyles, resulting in the separation and displacement of the two condyles and the forward displacement of the lower end of the humerus. Generally, there is a clear history of trauma, local swelling, pain and pressure pain are obvious, shoulder joint activity is restricted, the upper limb on the affected side is limited in abduction and supination, and the dislocated end often has a bulging deformity. The patient’s head is mostly tilted to the affected side and the jaw is biased to the healthy side, which reduces pain by relaxing the sternocleidomastoid muscle. In young patients, the fracture is not easily palpable, especially in green branch fractures, and the clinical manifestations are not obvious, but when dressing, lifting their hands or holding them from the axilla, they cry because of increased pain. X-ray examination can show the type of fracture and the degree of displacement. Differential diagnosis: severe elbow pain, pressure and swelling: clavicle fracture shows local swelling, pain and pressure pain are more obvious. Elbow pain: Epicondylitis of the humerus and impingement of the neurovascular bundle of the humeral epicondyle can cause elbow pain. Elbow sprain: Elbow sprain mostly occurs under the action of external force, causing the elbow to move in an abnormal range, resulting in injury to the medial and lateral collateral ligaments of the elbow Lateral elbow swelling and pain and dysfunction: Half humeral tuberosity fracture also known as Hahn-steinthal fracture, signs and symptoms: lateral elbow swelling and pain, elbow flexion and extension dysfunction.