Petrosquamous suture

Petrosquamous suture is a cranial suture found in the human skull. It is a fibrous joint that connects the petrous part of the temporal bone and the squamous part of the temporal bone.

Etymology

The term "Petrosquamous suture" is derived from the Latin words "petrosus," meaning "rocky," and "squamosus," meaning "scaly." This is in reference to the appearance and texture of the bones that the suture connects.

Anatomy

The Petrosquamous suture is located on the inferior surface of the temporal bone, running anteroposteriorly from the foramen spinosum to the foramen lacerum. It separates the petrous part of the temporal bone, which houses the inner ear, from the squamous part, which forms the lateral wall of the skull.

Clinical Significance

The Petrosquamous suture is of clinical significance as it can serve as a pathway for the spread of infections from the middle ear to the intracranial cavity. This can lead to serious conditions such as meningitis and brain abscess.

Related Terms

• Cranial sutures
• Temporal bone
• Foramen spinosum
• Foramen lacerum
• Meningitis
• Brain abscess

See Also

• Squamosal suture
• Sphenopetrosal suture
• Sphenosquamosal suture

Petrosquamous suture Resources
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