The discomalleolar ligament connects the posterior portion of the TMJ disc to the neck of the malleus of the middle ear via the petrotympanic fissure, providing a direct anatomical link between jaw and ear.
Transmits forces and positional changes between the TMJ and the ossicular chain of the middle ear, explaining the aural symptoms (tinnitus, fullness, hearing changes) frequently associated with TMJ disorders.
The discomalleolar ligament is the anatomical basis for the ear symptoms in TMJ dysfunction. Patients with TMJ disc displacement commonly report ipsilateral tinnitus, ear fullness, and subjective hearing changes. Treating the disc displacement frequently resolves these aural symptoms.
Ipsilateral tinnitus from discomalleolar ligament transmission of TMJ disc displacement forces to the malleus, resolving with successful TMJ treatment.
Sensation of ear fullness from altered ossicular mechanics via the discomalleolar ligament in TMJ disorders.
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