Foramen lacerum

Foramen Lacerum

The Foramen Lacerum is a jagged opening in the human skull, situated in the base of the cranium, between the sphenoid bone, the temporal bone, and the basilar part of the occipital bone. It is a complex structure, with a significant role in the anatomy of the skull base.

Base of the skull. Upper surface. (Foramen lacerum is #5.)

Structure

The Foramen Lacerum is located in the middle cranial fossa, anterior to the petrous part of the temporal bone. It is filled with fibrocartilage in the living body, and transmits no structures in normal anatomy. However, it is a significant landmark as it is located near several important structures, including the internal carotid artery and the jugular vein.

Clinical Significance

Due to its proximity to vital structures, the Foramen Lacerum can be involved in various pathological conditions. For instance, tumors or infections in this region can potentially compress the nearby structures, leading to neurological symptoms. Moreover, it can serve as a route for the spread of infections from the nasopharynx to the cranial cavity.

History

The term "Foramen Lacerum" is derived from the Latin words "foramen" meaning hole, and "lacerum" meaning torn or lacerated. This name reflects the irregular, jagged appearance of this opening in the skull.

See Also

• Foramen ovale (skull)
• Foramen spinosum
• Foramen magnum