Jo Yong Seok, Cheong Taek Yoon, Han Byung Hyun, Lee Jeon Mi, Kim Sung Huhn, Moon In Seok
Department of Otorhinolaryngology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang.
Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, South Korea.
Otol Neurotol. 2020 Jan;41(1):e1-e6. doi: 10.1097/MAO.0000000000002459.
To define clear clinical characteristics and management strategies of herniation of temporomandibular joint (TMJ) into the external auditory canal (EAC).
MEDLINE, PubMed, and EMBASE databases.
A search was conducted using the keywords "temporomandibular joint" and "herniation" with all of their synonyms. Literature selection criteria included articles published in English, and articles dating back no further than 1970.
Forty articles regarding 51 cases were eligible for critical appraisal. According to the previously published papers, TMJ herniation has following characteristics; symptoms are nonspecific, but a distinguishable feature is a protruding mass into the EAC that can be seen to appear and disappear as the mouth opens and closes. High-resolution computed tomography scans are sensitive to the bony defect and are helpful in diagnosing TMJ herniation. In the surgical treatment of TMJ herniation, wall reconstruction rather than simple mass excision could be a safe and long-lasting strategy.
Herniation of TMJ into the EAC is a rare condition, but can be encountered in the clinic at any time. This literature review could be helpful in the diagnosis and treatment of TMJ herniation into the EAC.
明确颞下颌关节（TMJ）疝入外耳道（EAC）的清晰临床特征及管理策略。
MEDLINE、PubMed和EMBASE数据库。
使用关键词“颞下颌关节”和“疝”及其所有同义词进行检索。文献选择标准包括以英文发表的文章，以及不早于1970年发表的文章。
40篇关于51例病例的文章符合严格评价标准。根据先前发表的论文，TMJ疝具有以下特征；症状不具特异性，但一个可区分的特征是外耳道内有一个突出肿物，可在张口和闭口时看到其出现和消失。高分辨率计算机断层扫描对骨缺损敏感，有助于诊断TMJ疝。在TMJ疝的手术治疗中，重建骨壁而非单纯切除肿物可能是一种安全且持久的策略。
TMJ疝入EAC是一种罕见病症，但在临床上随时可能遇到。这篇文献综述可能有助于TMJ疝入EAC的诊断和治疗。
