Jakkireddy Prasanna Kumar Reddy, Gali Rajasekhar, Rayadurgam Venkata Kishore Kumar, Devireddy Sathya Kumar, Kanubaddy Sridhar Reddy, Chakravarthy Haripriya
Department of Oral and Maxillofacial Surgery, Narayana Dental College and Hospital, Chinthareddy Palem, Nellore, Andhra Pradesh 524003 India.
J Maxillofac Oral Surg. 2024 Aug;23(4):1048-1052. doi: 10.1007/s12663-024-02151-2. Epub 2024 Mar 29.
Dislocation of the mandibular condyle of the temporomandibular joint (TMJ) is defined as a clinical condition in which head of the condyle is displaced out of its functional position within the glenoid fossa and posterior slope of the articular eminence Allen and Young in Br J Oral Surg 7:24-30, (1969). Dislocation of the mandibular condyle most commonly occurs in the anterior or anteromedial direction in both traumatic and non-traumatic origin dislocations. Lateral dislocations are generally rare owing to the thickening of the lateral surface of the articular capsule by the lateral ligament that strengthens the lateral surface of the joint Lovely and Copeland in J Can Dent Assoc 47:179-184, (1981). Trauma-induced dislocation of mandibular condyles is generally associated with a co-existing fracture of the condylar head, neck, or subcondylar region. Dislocation of the intact mandibular condyle in the superolateral direction is rare; if it occurs, it is difficult to reduce by closed reduction method. Present, this is a case report of rare bilateral superolateral dislocation of intact condyle associated with fractured mandibular symphysis region which was successfully managed through an open approach after failed attempts of closed reduction under local anaesthesia and general anaesthesia.
颞下颌关节(TMJ)下颌髁突脱位被定义为一种临床病症,即髁突头部在关节窝和关节结节后斜面内移出其功能位置(Allen和Young,《英国口腔外科杂志》7:24 - 30,1969年)。下颌髁突脱位在创伤性和非创伤性起源脱位中最常发生在前侧或前内侧方向。由于外侧韧带使关节囊外侧表面增厚,加强了关节外侧表面,外侧脱位通常很少见(Lovely和Copeland,《加拿大牙科协会杂志》47:179 - 184,1981年)。创伤性下颌髁突脱位通常与髁突头部、颈部或髁突下区域的并存骨折相关。完整的下颌髁突向上外侧方向脱位很少见;如果发生这种情况,通过闭合复位方法很难复位。目前,这是一例罕见的双侧完整髁突向上外侧脱位并伴有下颌联合区骨折的病例报告,在局部麻醉和全身麻醉下闭合复位尝试失败后,通过开放手术成功治疗。