Spine of sphenoid bone

Anterior view of the sphenoid bone, showing the spine (labeled at center right)

The Spine of Sphenoid Bone is a bony process located on the sphenoid bone, one of the seven bones that make up the orbit in the human skull. It is a small, sharp projection that extends downward from the body of the sphenoid bone.

Anatomy

The spine of the sphenoid bone is located at the posterior and inferior part of the body of the sphenoid bone. It is a pointed, tubercle-like structure that projects downward and slightly backward. The spine serves as an attachment point for several muscles and ligaments, including the pterygospinous ligament and the lateral pterygoid muscle.

Function

The spine of the sphenoid bone serves as a point of attachment for several muscles and ligaments that are involved in the movement of the jaw and neck. These include the lateral pterygoid muscle, which is involved in the lateral movement of the jaw, and the pterygospinous ligament, which helps to stabilize the spine of the sphenoid bone.

Clinical Significance

Due to its location and function, the spine of the sphenoid bone can be involved in several medical conditions. For example, inflammation or injury to the muscles or ligaments attached to the spine can cause pain and restricted movement in the jaw and neck. Additionally, certain diseases, such as sphenoid sinusitis, can affect the sphenoid bone and potentially impact the spine.

See Also

• Sphenoid bone
• Lateral pterygoid muscle
• Pterygospinous ligament