Arthrotomography of the temporomandibular joint was performed on 207 joints of 148 patients by puncturing inferior and superior joint compartments and injecting water-soluble contrast medium under fluoroscopy. Symptoms of these subjects were arthralgia, noise and hypomobility of the temporomandibular joint. In the results, 16 joints (7.7%) were normal, 31 joints (15.0%) with reducible anterior disk displacement (click), 143 joints (69.1%) with non-reducible anterior disk displacement (closed-lock), and 17 joints (8.2%) with stenosis or adhesion of the joint compartment. Among the all joints, 13 joints (6.3%) associated with discal perforation. These findings indicated several intra-capsular organic changes, moreover has a significance in differential diagnosis and treatment for the patients with temporomandibular joint arthrosis
