Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Temporomandibular joint ankylosis suspected to be associated with ankylosing spondylitis based on cervical computed tomography images: A pictorial essay

  • Ikuho Kojima (Department of Oral and Maxillofacial Radiology, Tohoku University Hospital) ;
  • Shinnosuke Nogami (Department of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry) ;
  • Shin Hitachi (Department of Diagnostic Radiology, Tohoku University Hospital) ;
  • Yusuke Shimada (Department of Oral and Maxillofacial Radiology, Tohoku University Hospital) ;
  • Yushi Ezoe (Department of Oral and Maxillofacial Surgery, Tohoku University Graduate School of Dentistry) ;
  • Yuka Yokoyama-Sato (Department of Oral and Maxillofacial Radiology, Tohoku University Hospital) ;
  • Masahiro Iikubo (Department of Oral and Maxillofacial Radiology, Tohoku University Hospital)
  • Received : 2023.11.09
  • Accepted : 2024.01.29
  • Published : 2024.06.30
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Abstract

This report showed a case of temporomandibular joint (TMJ) ankylosis suspected to be associated with ankylosing spondylitis based on the observation of bony ankylosis of the cervical spine on computed tomography (CT) images. A 53-year-old man presented with a chief complaint of difficulty in opening his mouth. His medical history indicated that in his 20 s, he became aware of the difficulty in moving his neck. CT revealed marked osteoarthritic changes in the right mandibular condyle, suggesting fibrotic TMJ ankylosis. In addition, bony ankylosis of the cervical vertebral body and facet joints from the axis (C2) to C5 in continuity was observed. CT of the entire spine also showed bony deformity of the sacroiliac joints and bony ankylosis. Based on these findings, ankylosing spondylitis was suspected. The possibility of an ankylosing spondylitis complication should be considered in cases of TMJ ankylosis if bony ankylosis of the cervical spine is observed.

Keywords

Acknowledgement

We thank Editage (www.editage.com) for English language editing.

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