Middle clinoid process
(Redirected from Processus clinoideus medius)
The middle clinoid process is a small bony projection located on the sphenoid bone within the human skull. It is one of the three clinoid processes, the other two being the anterior clinoid process and the posterior clinoid process. These processes are part of the sella turcica, a saddle-shaped depression in the sphenoid bone that houses the pituitary gland.
Anatomy[edit | edit source]
The middle clinoid process arises from the sphenoid bone, specifically from the lesser wing of the sphenoid. It is situated medial to the anterior clinoid process and anterior to the posterior clinoid process. The middle clinoid process is often small and may be absent in some individuals. When present, it can sometimes form a bony bridge with the anterior clinoid process, creating a structure known as the carotico-clinoid foramen.
Function[edit | edit source]
The primary function of the middle clinoid process is to serve as an attachment point for the tentorium cerebelli, a membranous structure that separates the cerebellum from the inferior portion of the occipital lobes of the brain. This attachment helps to stabilize the brain within the skull and provides support to the pituitary gland.
Clinical Significance[edit | edit source]
The middle clinoid process can be of clinical importance in certain neurosurgical procedures. Its proximity to the internal carotid artery and the cavernous sinus makes it a landmark in surgeries involving the sella turcica and the pituitary gland. An enlarged or ossified middle clinoid process can sometimes impinge on adjacent structures, potentially leading to complications such as carotid artery compression.
Related Structures[edit | edit source]
- Anterior clinoid process
- Posterior clinoid process
- Sella turcica
- Pituitary gland
- Sphenoid bone
- Tentorium cerebelli
- Internal carotid artery
- Cavernous sinus
See Also[edit | edit source]
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