Occipital bone. Outer surface. (Condyloid canal visible at center left.)
|Anatomical terms of bone|
The condylar canal (or condyloid canal) is a canal in the condyloid fossa of the lateral parts of occipital bone behind the occipital condyle. Resection of the rectus capitus posterior major and minor muscles reveals the bony recess leading to the condylar canal, which is situated posterior and lateral to the occipital condyle. It is immediately superior to the extradural vertebral artery, which is making a loop above the posterior C1 ring to enter the foramen magnum. The anteriomedial wall of the condylar canal thickens to join the foramen magnum rim and connect to the occipital condyle.
It is not always present, and can have variations of being a single canal or multiple smaller canals in cluster.
- Anatomy diagram: 34257.000-2 at Roche Lexicon - illustrated navigator, Elsevier
- Akram Abood Jaffar: Personal website, Anatomical variations
- Slide at uiuc.edu
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