Magnetic resonance imaging findings of internal derangement, osteoarthrosis, effusion, and bone marrow edema before and after performance of arthrocentesis and hydraulic distension of the temporomandibular joint

MRI variables of internal derangement, effusion, and BME were related to TMJ internal derangement type III and capsulitis/synovitis; however, arthrocentesis was only associated with a significant change in diagnoses of TMJ BME.