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Genioglossus Tendinous Attachment

tendo musculi genioglossi ad mandibulam

The genioglossus arises from the superior mental spine (genial tubercle) on the inner surface of the mandibular symphysis via a short tendinous origin. This attachment is the primary anchor of the tongue to the mandible and prevents posterior tongue displacement during sleep.

Region: Head & Skull

Clinical Relevance

Clinical Notes

The genioglossus tendinous attachment at the superior genial tubercle is the target of genioglossus advancement surgery for obstructive sleep apnoea, where an osteotomy segment containing the tubercle is advanced anteriorly to increase hypopharyngeal airway space. The genial tubercle is identified radiographically as a bony protuberance on the lingual mandibular surface. In edentulous mandibles, resorption may reduce the tubercle prominence. Mandibular fractures through the symphysis may disrupt the genioglossus attachment.

Pathology

Common Injuries & Conditions

Tongue Base Obstruction from Genioglossus Laxity

Loss of anterior tongue tension from genioglossus tendon laxity or mandibular resorption contributing to posterior tongue displacement in obstructive sleep apnoea, addressed by genioglossus advancement or mandibular advancement.