title: Unlocking the jaw: advanced imaging of the temporomandibular joint.
abstract: OBJECTIVE
  Temporomandibular joint (TMJ) dysfunction is a common condition, affecting up to 28% of the population. The TMJ can be affected by abnormal dynamics of the disk-condyle complex, degenerative arthritis, inflammatory arthritis, and crystal arthropathy. Less commonly, neoplasms and abnormal morphologic features of the condyle are causes of TMJ symptoms. Cross-sectional imaging is frequently used for diagnosis.
  
  
  CONCLUSIONS
  Knowledge of the normal imaging appearance of the TMJ, its appearance on radiological examination, and interventional techniques are useful for providing a meaningful radiologic contribution. This article will review normal TMJ anatomy; describe the normal ultrasound, CT, and MRI appearances of TMJ; provide imaging examples of abnormal TMJs; and illustrate imaging-guided therapeutic TMJ injection.
authors.affiliation: 1 Department of Radiology, Penn State Hershey Medical Center, 500 University Dr, Hershey, PA 17033.
authors.forename: Jonelle M
authors.initials: JM
authors.lastname: Petscavage-Thomas
authors.forename: Eric A
authors.initials: EA
authors.lastname: Walker
mesh_terms: D000293:Adolescent; D000328:Adult; D003952:Diagnostic Imaging / Q000379:methods*; D006801:Humans; D008297:Male; D011859:Radiography; D025321:Surgery, Computer-Assisted / Q000379:methods*; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging* / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000601:surgery*; D055815:Young Adult
keywords: MRI; internal derangement; jaw; temporo mandibular joint