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  • Title: Transcanal Endoscopic Stapedial and Tensor Tympani Tenotomy for Middle Ear Myoclonus: A Retrospective Case Series of Surgical Outcomes.
    Author: Moon S, Yeon EK, Son HO, Choi JW.
    Journal: Otol Neurotol; 2023 Jun 01; 44(5):478-482. PubMed ID: 37026830.
    Abstract:
    OBJECTIVE: To describe and analyze the surgical outcomes of transcanal endoscopic resection of the stapedial tendon (ST) and tensor tympani tendon (TT) in the management of middle ear myoclonus (MEM). STUDY DESIGN: A retrospective case series. SETTING: Tertiary academic center. PATIENTS: Seven consecutive patients (seven ears) with tinnitus were diagnosed with MEM. INTERVENTION: Transcanal endoscopic resection of both the ST and TT using either microinstruments or a laser. MAIN OUTCOME MEASURES: The symptom of tinnitus, based on visual analog scale and Tinnitus Handicap Inventory scores, was analyzed preoperatively and postoperatively for each patient. The intraoperative findings and postoperative complications were also evaluated. RESULTS: Amelioration of objective tinnitus with significant improvement in visual analog scale and Tinnitus Handicap Inventory scores was noted in all seven patients. The ST and TT were easily identified in the same endoscopic field, with minimal or no removal of the scutum. There was no need to perform an anterior tympanotomy to expose the TT. Resection of both the ST and TT and creating a gap between the cut edges were achieved by using either microinstruments or a laser under an endoscopic field. Conversion to or conjunction with the microscopic approach was unnecessary for any of the seven patients. No hearing loss or hyperacusis occurred postoperatively. CONCLUSIONS: Transcanal endoscopic resection of the ST and TT successfully ameliorated the symptom of tinnitus in patients with MEM. A transcanal endoscopic approach provides an alternative method to manage MEM, providing excellent visualization and minimal invasiveness.
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