MRI in the assessment of internal derangement and pain within the temporomandibular joint: a pictorial essay.

In this pictorial essay we aim to illustrate the normal temporomandibular joint (TMJ) and the common abnormalities of the osseous, cartilaginous and soft tissue components. These include disc (meniscus) displacement, deformities and perforations, abnormalities of disc and condylar movement, joint effusions, synovial proliferation, condylar deformity and erosions, degenerative change and abnormal retrodiscal enhancement.