Temporomandibular joint dislocation

Case contributed by István Kui
Diagnosis certain

Presentation

After removing the dental prosthesis, she can not close the mouth.

Patient Data

Age: 70
Gender: Female

Both of the temporomandibular joints are anteriorly dislocated. There is no fracture. The first image showed the right and the second image, the left temporomandibular joint.

The right(first image) and left(second image) lateral view of the temporomandibular joint post-reduction. The mandibular condyle is in the articular surface of the temporal bone. (the glenoid fossa).

Case Discussion

The temporomandibular joint dislocation can be unilateral and bilateral.  

The most common type is the anterior luxation.

The dislocation can occur as a result of a trauma, but atraumatic etiology also exists.

The atraumatic way can be by seizures, yawning, and kissing. Anatomical abnormalities or iatrogenic maneuvers can also lead to this cause, like intubation and laryngoscopy. 

Our patient had an atraumatic way of onset. The traumatologist reduced the dislocation successfully. 

 

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