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OPLL pp 99-112 | Cite as

Image Diagnosis of Cervical Ossification of the Posterior Longitudinal Ligament

  • Satoshi Terae
  • Kazuo Miyasaka

Abstract

Ossification of the posterior longitudinal ligament (OPLL) is most often diagnosed on lateral plain radio­graphs as an abnormal radiopacity along the posterior aspects of the vertebral bodies. The radiopaque masses may be linear or lumpy and can cross several disk spaces. However, ossification or calcification of the intraspinal ligaments (the posterior longitudinal liga­ment and the ligamentum flavum) is frequently over­looked on plain films because of superimposed bony structures such as facets and laminae [1,2]. Tomography and computed tomography (CT) are much more sensitive and indispensable to visualize the detailed outline of the ossified or calcified mass. Be­cause OPLL often accompanies other ligamentous ossi­fication such as ossification of the ligamentum flavum, meticulous attention to both clinical and radiological findings is mandatory in determining the level of involvement [3].

Keywords

Cervical Spine Vertebral Body Spinal Canal Cord Compression Spin Echo 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Japan 1997

Authors and Affiliations

  • Satoshi Terae
    • 1
  • Kazuo Miyasaka
    • 1
  1. 1.Department of RadiologyHokkaido University School of MedicineSapporo, Hokkaido, 060Japan

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