Elbow joint rattling pain can be caused by imperfect joint development, trauma, degenerative disease, intra-articular free body, soft tissue lesions and other factors. 1. Imperfect joint development: teenagers and children, due to imperfect development of joints, may experience rattling and pain during strenuous activities due to the instability of elbow joints and the impact of joint structures. 2. Trauma: Bone and soft tissue damage to the elbow joint caused by trauma, such as elbow fracture, dislocation, and tendon and ligament injuries, can also damage the elbow joint structure, leading to joint instability, and the elbow joint rattling and pain can occur during activities. 3. Degenerative lesions: Osteoarthritis and other degenerative changes in the elbow joint can cause osteophytes and destruction of articular cartilage, which can cause friction of the damaged articular cartilage during the elbow joint activities, resulting in rattling and pain. 4. Intra-articular free body: after the abnormal calcification of synovial tissue in the elbow joint, the calcified tissue can be dislodged and embedded in the joint cavity, and the symptoms of rattling and pain can appear when moving the joint. 5. Soft tissue lesions: elbow synovitis, synovial crease syndrome and other diseases, can lead to synovial tissue hyperplasia, hypertrophy, affecting the normal activities of the joints, activities of the thickened synovial tissue by the extrusion of the symptoms of ringing pain. When the elbow joint rattles and hurts, you should consult a doctor in time, and under the guidance of a specialist, actively carry out the appropriate treatment, which will help to alleviate the uncomfortable symptoms as soon as possible.