Traumatic Posterior Dislocation of Bilateral Mandible Condyles into External Auditory Canal Treated with Midline Mandibu
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Traumatic Posterior Dislocation of Bilateral Mandible Condyles into External Auditory Canal Treated with Midline Mandibulotomy: A Rare Case Report and Review of Literature Satnam Singh Jolly1 • Vidya Rattan1 • Sachin Rai1 • Upma Verma1
Received: 4 March 2020 / Accepted: 25 August 2020 Ó The Association of Oral and Maxillofacial Surgeons of India 2020
Abstract 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.
& Satnam Singh Jolly [email protected] 1
Unit of Oral and Maxillofacial Surgery, OHSC PGIMER, Chandigarh, India
Introduction A common site for mandibular condyle dislocation is anterior, medial, and lateral, but the posterior dislocation is extremely rare [1–3]. Trauma to the chin generally causes direct or indirect injuries to various parts of the mandible [4]. Most of the indirect injury impact causes condylar neck and subcondylar fractures. If the condyle does not fracture or not laterally dislocated, the posterior force vector causes dislocation of the condyle in the backward direction led to the fracture of the external auditory canal (EAC) [5]. A very few cases have been reported in the English literature related to posterior dislocation of mandibular condyles till date. So the treatment of posterior dislocation of condyle has not been described in the literature due to its rare occurrence and individual approach to treat by each surgeon. We report a rare case of posterior dislocation of bilateral mandible condyles into the external auditory canal in a male patient, which was treated with a midline mandibulotomy after the failure of all the conservative methods.
Case Report A 25-year-old male victim of trauma over chin reported to us with a chief complaint of inability to open mouth and pain in the preauricular region. The physical examination revealed a definite facial asymmetry, with a severely retruded chin, increased overbite up to
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