Journal
OTOLOGY & NEUROTOLOGY
Volume 41, Issue 1, Pages E1-E6Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MAO.0000000000002459
Keywords
External auditory canal; Foramen of Huschke; Foramen of tympanicum; Temporomandibular joint
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Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1C1C1006341]
- National Research Foundation of Korea [2019R1C1C1006341] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Objective: To define clear clinical characteristics and management strategies of herniation of temporomandibular joint (TMJ) into the external auditoiy canal (EAC). Data Source: MEDLINE, PubMed, and EMBASE data-bases. Study Selection: 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 hack no further than 1970. Results: 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. Conclusions: Herniation of TMJ into the EAC is a rare condition, hut can he encountered in the clinic at any time. This literature review could be helpful in the diagnosis and treatment of TMJ herniation into the EAC.
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