Traumatic Posterior Dislocation of Bilateral Mandible Condyles into External Auditory Canal Treated with Midline Mandibulotomy: A Rare Case Report and Review of Literature.

BACKGROUND: Posterior dislocation of the condyle from the glenoid fossa fracturing the anterior wall of the canal and ultimately restricting lower jaw movements is a rare condition. It may occur due to lax intra-articular ligaments or periarticular tissue or as a result of injury to the chin region. Very few cases of this condition are reported in the literature.
PURPOSE: The purpose of this article is to present a rare case report and review of literature related to posterior dislocation of bilateral mandible condyles to the external auditory canal, its diagnosis, and treatment with midline mandibulotomy.
METHOD: We used conservation methods to reduce it initially but not succeeded. Then we used midline mandibulectomy to reduce the individual condyle to its original position without opening the condyle region.
RESULTS: We achieved a successful reduction of the dislocation and achieved with good occlusion and postoperative mouth opening. No complications like recurrence and TMJ ankylosis occurred.
CONCLUSION: Bilateral posterior dislocation is a rare condition; proper clinical, radiographic diagnosis, and early treatment with manual or surgical intervention are required to avoid complications. © The Association of Oral and Maxillofacial Surgeons of India 2020.