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  • Title: Surgical results of modified canal wall down tympanoplasty.
    Author: Gu FM, Chi FL.
    Journal: Acta Otolaryngol; 2017 Aug; 137(8):803-806. PubMed ID: 28431494.
    Abstract:
    CONCLUSION: Patients with mastoiditis and chronic suppurative otitis media which has small mastoids that make them ideal candidates for modified canal wall down mastoidectomy (MCWD) which contributes to a dry and spacious ear and the maintaining and improving hearing. OBJECTIVES: To evaluate surgical outcomes for chronic otitis media underwent MCWD. METHODS: A clinical retrospective study was performed on 47 ears with chronic otitis media which has relatively limited attic lesions have the small, sclerotic and hypocellular mastoids according to the preoperative high-resolution CT scan of the temporal bone that underwent MCWD and 32 ears with typical canal wall down operation form January 2010 to January 2016. RESULTS: In the MCWD group, the mean preoperative air conduction (AC) threshold of 38.2 ± 1.1 dB was lowered to 31.0 ± 0.8 dB postoperatively (p < .01). The mean pre- and postoperative air-bone gaps (ABG) of all patients were 16.0 ± 1.0 dB and 9.6 ± 0.8 dB, respectively. In the canal wall down group, the mean preoperative AC threshold of 37.2 ± 1.0 dB was lowered to 32.8 ± 0.9 dB postoperatively (p < .01). The mean pre- and postoperative air-bone gap was reduced with 4.4 ± 0.4 dB (p < .01). There was statistical difference in hearing improvement between the modified canal wall down and the canal wall down group (p < .05).
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