Malik Kapil, Debnath Subhas C, Adhyapok Apurba K, Hazarika Kriti
Postgraduate Trainee, Department of Oral and Maxillofacial Surgery, Regional Dental College, Guwahati, Assam, India.
Assistant Professor, Department of Oral and Maxillofacial Surgery, Regional Dental College, Guwahati, Assam, India.
J Oral Maxillofac Surg. 2017 Oct;75(10):2183.e1-2183.e6. doi: 10.1016/j.joms.2017.05.005. Epub 2017 May 15.
Dislocation of the mandibular condyle from the glenoid fossa can occur in anterior, posterior, lateral, and superior directions. Posterior, lateral, and superior dislocations are rare. Superolateral dislocation is seldom encountered in clinical practice. It is generally associated with fracture of the anterior or contralateral side of the mandible. The occurrence of superolateral dislocation of the condyle hooked above the zygomatic arch with an associated fracture of the medial pole of the condyle is rare and has been reported only once in the literature. This report describes another case in which the patient had superolateral dislocation of the mandibular condyle with a fractured medial pole without any associated fracture of the anterior or contralateral side of the mandible. The condyle was hooked laterally above the zygomatic arch. Open reduction of the dislocated condyle was performed and a good outcome was obtained.
下颌骨髁突从关节窝脱位可向前、后、外侧及上方发生。后脱位、外侧脱位及上脱位较为罕见。临床实践中很少遇到上外侧脱位。它通常与下颌骨前部或对侧骨折相关。髁突钩挂于颧弓上方且伴有髁突内侧极骨折的上外侧脱位的发生极为罕见，文献中仅报道过1例。本报告描述了另一例患者，其下颌骨髁突发生上外侧脱位且内侧极骨折，而下颌骨前部或对侧无任何相关骨折。髁突向外侧钩挂于颧弓上方。对脱位的髁突进行了切开复位，取得了良好的效果。
