Condylar Canal Information
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.
Through the condylar canal, the occipital emissary vein connects to the venous system including the suboccipital venous plexus, occipital sinus and sigmoid sinus.
It is not always present, and can have variations of being a single canal or multiple smaller canals in cluster.
Additional images
Bilateral condylar canals (arrows) above the vertebral arteries. Dr. Victor Yang 2009
External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
| · ·
Bones of head and neck: Foramina of the skull (and canals, fissures, meati, and hiati) (TA A02.1.00.053–097, GA 2.178–199) |
|
| Anterior cranial fossa |
to Orbit: ethmoidal foramina (anterior, posterior)
to Nasal cavity: olfactory foramina (CN-I) · foramen cecum
|
|
| Middle cranial fossa |
to Orbit: optic canal (CN-II) · superior orbital fissure (CN-III,IV,V1,VI)
to Pterygopalatine fossa: foramen rotundum (CN-V2) · pterygoid canal
to Infratemporal fossa: foramen ovale (CN-V3) · foramen spinosum/carotid canal
other: foramen lacerum · hiatus for greater petrosal nerve · hiatus for lesser petrosal nerve · sphenoidal emissary foramen
|
|
| Posterior cranial fossa |
internal auditory meatus/facial canal/stylomastoid foramen (CN-VII,VIII) · jugular foramen (CN-IX,X,XI) · foramen magnum (CN-XI) · hypoglossal canal (CN-XII) · condylar canal · mastoid foramen
|
|
| Orbit |
to Nasal cavity: nasolacrimal canal
to Face: supraorbital (notch, foramen) · infraorbital (foramen, groove) · zygomatic foramen (-facial, -temporal)
to Pterygopalatine fossa: inferior orbital fissure
other: Inferior orbital fissure · Fossa for lacrimal sac
|
|
| Pterygopalatine fossa |
to Nasal cavity: sphenopalatine foramen
to Oral cavity: greater palatine canal/greater palatine foramen · lesser palatine canals/lesser palatine foramina
to Infratemporal fossa: pterygomaxillary fissure
to Nasopharynx: palatovaginal canal
|
|
| Nasal cavity |
to Oral cavity: incisive canals · incisive foramen
|
|
| Other |
external acoustic meatus · mandibular foramen · mental foramen · parietal foramen · petrotympanic fissure · semilunar hiatus
|
|
|
: BON/CAR
|
(///, , /, )///
|
//, /,
|
, drug()
|
|
|
|
Categories: Foramina of the skull |
|
The above information uses material from Wikipedia and is licensed under the GNU Free Documentation License.
Some facts may not have been fully verified for accuracy. [Disclaimers]
This page was last archived by our server on Sat Dec 3 10:10:42 2011.
Displaying this page or its contents does not use any Wikimedia Foundation's resources.
The owners of this site proudly support the Wikimedia Foundation.
|
|
