Contrast-enhanced MRI compared to direct joint visualization at arthroscopy in pediatric patients with suspected temporomandibular joint synovitis.

Joint space width and subjective synovitis on TMJ MRI correlate with arthroscopic findings of chronic synovitis. Increased joint space width may be useful when evaluating the TMJ with less time-intensive modalities, such as ultrasound. However, MRI findings did not correlate well with findings of acute inflammation on arthroscopy.