CT of the Craniocervical junction: Anatomy
The images below are reconstructions obtained from a scan of the cervical spine. Each row of thumbnails correspond to a given level and the green cross indicates the reference planes for each image of this Level.
Click each thumbnail to see the corresponding full-size version of the photo with captions. The large photo displays in the center of the page.
Level 1.
Axial reconstruction. 1, Atlanto-occipital joint. 2, Anterior arch, C1 (Atlas). 3, Odontoid process. 4, Occipital condyle.
Coronal reconstruction. 1, Occipital condyle. 2, Atlanto-occipital joint. 3, Transverse process, C1 (Atlas). 4, Odontoid process. 5, Lateral mass, C1 (Atlas).
Sagittal reconstruction. 1, Clivus. 2, Anterior arch, C1 (Atlas). 3, Odontoid process. 4, Vertebral body, C4. 5, Spinous process, C4.
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Level 2
Axial reconstruction. 1, Anterior arch, C1 (Atlas). 2, Odontoid process. 3, Styloid process. 4, Transverse foramen. 5, Posterior arch, C1 (Atlas).
Coronal reconstruction. 1, Atlanto-occipital joint. 2, Occipital condyle. 3, Transverse process, C1 (Atlas). 4, Intervertebral disc space C2-C3. 5, Body C2. 6, Lateral mass, C1 (Atlas).
Sagittal reconstruction. 1, Clivus. 2, Anterior arch, C1 (Atlas). 3, Atlanto-axial joint. 4, Axis (C2). 5, Intervertebral disc space C3-C4. 6, Spinous process, C5.
Level 3
Level 4.
Axial reconstruction. 1, Superior articular facet C2. 2, Body C2. 3, Styloid process. 4, Spinal canal.
Coronal reconstruction. 1, Atlanto-occipital joint. 2, Occipital condyle. 3, Transverse process, C1 (axis) - left side. 4, Lateral mass, C1 (left side). 5, Lateral mass, C1 (right side).6, Transverse process, C1 (axis) - right side.
Sagittal reconstruction. 1, Clivus. 2, Anterior arch, C1 (Atlas). 3, Spinous process, C3.
Level 5
Axial reconstruction. 1, Transverse process, C2. 2, Body C2. 3, Transverse foramen (C2). 4, Spinal canal. 5, Spinous process, (C2). 6, Lamina. 7, Pedicle.
Coronal reconstruction. 1, Occipital condyle. 2, Odontoid process. 3, Atlanto-axial joint. 4, Intervertebral disc space C2-C3. 5, Body C2.
Sagittal reconstruction. 1, Clivus. 2, Spinal canal. 3, Spinous process, C5.
Level 6
Axial reconstruction. 1, Neural foramen. 2, Body C2. 3, Inferior articular process, C2. 4, Vertebral canal. 5, Bifid spinous process, C2 (Axis). 6, Lamina.
Coronal reconstruction. 1, Transverse process, C1. 2, Atlanto-occipital joint. 3, Occipital condyle. 4, Lateral mass, C1. 5, Atlanto-axial joint. 6, Intervertebral disc space C2-C3. 7, Vertebral body, C3. 8, Tip of the transverse process, C3. 9, Transverse foramen, C2.
Sagittal reconstruction. 1, Pharynx. 2, Epiglottic cartilage. 3, Vertebral canal. 4, Intervertebral disc space C4-C5.