Imaging of temporomandibular joint ankylosis. A new radiographic classification

To compare the pre-operative clinical and radiographic findings of temporomandibular joint (TMJ) ankylosis with those found at operation and propose new classification. Thirty-three patients were treated for TMJ ankylosis. There were 18 unilateral and 12 bilateral cases. All patients underwent pre-o...

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Bibliographic Details
Published in:Dento-maxillo-facial radiology 2002-01, Vol.31 (1), p.19-23
Main Authors: El-Hakim, Ibrahim E, Metwalli, S A
Format: Article
Language:English
Subjects:
Adolescent
Adult
Ankylosis - classification
Ankylosis - diagnostic imaging
Ankylosis - surgery
Arthroplasty
Child
Child, Preschool
Contrast Media
Dentistry
Female
Humans
Image Processing, Computer-Assisted
Imaging, Three-Dimensional
Male
Mandibular Condyle - surgery
Maxillary Artery - diagnostic imaging
Osteotomy - instrumentation
Patient Care Planning
Preoperative Care
Radiography, Panoramic
Retrospective Studies
Sphenoid Bone - diagnostic imaging
Temporal Bone - diagnostic imaging
Temporomandibular Joint Disorders - classification
Temporomandibular Joint Disorders - diagnostic imaging
Temporomandibular Joint Disorders - surgery
Tissue Adhesions - surgery
Tomography, X-Ray Computed - methods
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Summary:To compare the pre-operative clinical and radiographic findings of temporomandibular joint (TMJ) ankylosis with those found at operation and propose new classification. Thirty-three patients were treated for TMJ ankylosis. There were 18 unilateral and 12 bilateral cases. All patients underwent pre-operative clinical and radiographic examination, (consisting of a panoramic radiograph, axial and coronal CT. The surgical findings were compared with the imaging features. Post-contrast coronal CT was the best imaging modality for planning surgery as it displayed the anatomical relationship between the ankylosed segment and the surrounding vital structures, particularly where the sphenoid and temporal bones were involved. Surgical planning should be based on coronal and axial CT. A new classification of TMJ ankylosis based on the CT findings is proposed.
ISSN:0250-832X
DOI:10.1038/sj.dmfr.4600660