Department of Otorhinolaryngology-Head and Neck Surgery, Veterans Health Service Medical Center, Seoul, Korea.
Cranio. 2024 Jan;42(1):90-93. doi: 10.1080/08869634.2023.2221990. Epub 2023 Jun 16.
Herniation of the temporomandibular joint (TMJ) into the external auditory canal (EAC) due to a bony defect in the EAC is rare. Such bony defects can be secondary to inflammation, neoplasm, trauma. In rare instances, TMJ herniation can occur when the Huschke foramen is constantly exposed. TMJ herniation can induce clicking tinnitus, otalgia, conductive hearing loss, and otorrhea, but can also present with no symptoms. This study reports a case of TMJ herniation.
A male patient presented with clicking tinnitus that had developed 3 years ago. Dome-shaped soft tissue was found on the anterior EAC wall, which protruded and depressed with mouth movement. The patient underwent surgical reconstruction of the bony defect with titanium mesh, and the symptoms resolved after surgery.
This case highlights the importance of surgical reconstruction of a bony defect in the EAC using appropriate materials.
由于外耳道（EAC）的骨缺损，颞下颌关节（TMJ）疝入外耳道罕见。这种骨缺损可继发于炎症、肿瘤、创伤。在罕见情况下，当 Huschke 孔持续暴露时，TMJ 疝也会发生。TMJ 疝可引起咔哒样耳鸣、耳痛、传导性听力损失和耳漏，但也可能无症状。本研究报告了 1 例 TMJ 疝。
一名男性患者出现咔哒样耳鸣，发病 3 年前。在前外耳道壁发现半球形软组织，随口运动而突出和凹陷。患者接受了钛网修复 EAC 骨缺损的手术重建，术后症状缓解。
本病例强调了使用适当材料进行 EAC 骨缺损手术重建的重要性。
