Sphenomandibular ligament

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Ligament of the jaw

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Latin	ligamentum sphenomandibulare

The sphenomandibular ligament is a flat, thin band of fibrous tissue that plays a crucial role in the anatomy of the jaw. It extends from the spine of the sphenoid bone to the lingula of the mandible.

Anatomy

The sphenomandibular ligament is one of the key ligaments associated with the temporomandibular joint (TMJ). It is situated on the medial side of the mandible and is often considered a remnant of the Meckel's cartilage from embryonic development.

Function

The primary function of the sphenomandibular ligament is to support the mandible and limit its movements. It acts as a passive support structure, helping to stabilize the mandible during various activities such as chewing and speaking.

Clinical Significance

The sphenomandibular ligament can be involved in certain medical conditions affecting the jaw. For instance, it may be implicated in cases of temporomandibular joint disorder (TMD), where patients experience pain and dysfunction in the jaw joint and surrounding muscles.

Related Structures

• Temporomandibular joint
• Mandible
• Sphenoid bone
• Meckel's cartilage

See Also

• Temporomandibular joint disorder
• Ligaments of the head and neck