Traumatic arthritis can be detected through history taking, symptoms, physical examination, and auxiliary examination. 1. History: traumatic arthritis has a history of joint trauma and strenuous activities. 2. Symptoms: recurrent pain in the knee and other joints within the past month. 3. Physical examination: the diseased joints may have no swelling or mild swelling, some may have joint deformity, localized pressure and pain, some may have activity limitation, and there may be friction sound or friction sensation during activity. 4. Laboratory tests: C-reactive protein and elevated erythrocyte sedimentation rate. 5. Auxiliary examination: X-ray examination can help to understand the general bony structure and damage, CT examination can help to understand the subtle damage to the bony structure of the joints, and MRI examination can help to understand the damage to the cartilage and soft tissues in the joints of the joints. If any of the above signs or symptoms occur, it is recommended to go to the hospital for diagnosis and treatment.