Axial superior facet slope may determine anterior or posterior atlantoaxial displacement secondary to os odontoideum and compensatory mechanisms of the atlantooccipital joint and subaxial cervical spine - Takeaways - MDSpire
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The Role of Axial Superior Facet Slope in Anterior or Posterior Atlantoaxial Displacement Associated with Os Odontoideum and Compensatory Adjustments in the Atlantooccipital Joint and Subaxial Cervical Spine

  • By

  • Yan Chen

  • Han Du

  • Xiaofei Cheng

  • Jie Zhao

  • Han Qiao

  • Changqing Zhao

  • March 22, 2023

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  • 1

    Os odontoideum is a significant factor in atlantoaxial displacement, leading to higher morbidity in anterior displacement compared to posterior displacement.

  • 2

    The axial superior facet slope may influence the direction of atlantoaxial displacement and trigger compensatory mechanisms in the cervical spine.

  • 3

    A study included 24 patients with os odontoideum and atlantoaxial displacement, comparing them to a control group of 72 patients with cervical degeneration.

  • 4

    Measurements of cervical sagittal parameters were conducted using mid-sagittal CT reconstructions and standing cervical X-ray examinations.

  • 5

    The study found excellent reliability for the axial superior facet slope measurements, indicating its potential role in assessing atlantoaxial displacement.

Original Source(s)

Axial superior facet slope may determine anterior or posterior atlantoaxial displacement secondary to os odontoideum and compensatory mechanisms of the atlantooccipital joint and subaxial cervical spine

  • by Yan Chen, Han Du, Xiaofei Cheng, Jie Zhao, Han Qiao, Changqing Zhao

  • March 22, 2023

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