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Sphenomandibular ligament: Wikis

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Ligament: Sphenomandibular ligament
Gray310.png
Articulation of the mandible. Medial aspect. (Spheno-mandibular lig. labeled vertically at center.)
Latin ligamentum sphenomandibulare
Gray's subject #75 297
From spine of sphenoid bone
To mandibular foramen
Dorlands/Elsevier l_09/12493077

The sphenomandibular ligament (internal lateral ligament) is a flat, thin band which is attached above to the spina angularis of the sphenoid bone, and, becoming broader as it descends, is fixed to the lingula of the mandibular foramen. The function of the sphenomandibular ligament is to limit distension of the mandible in an inferior direction.

Its lateral surface is in relation, above, with the lateral pterygoid; lower down, it is separated from the neck of the condyle by the internal maxillary vessels; still lower, the inferior alveolar vessels and nerve and a lobule of the parotid gland lie between it and the ramus of the mandible.

Its medial surface is in relation with the medial pterygoid.

The sphenomandibular ligament is most often damaged in an inferior alveolar nerve block.

The ligament is derived from Meckel's cartilage.

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