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PubMed2005

Air and bone conduction change after stapedotomy and partial stapedectomy for otosclerosis.

OBJECTIVE: The aim of this study was to analyze and compare the results obtained in otosclerosis patient undergoing stapedotomy and partial stapedectomy. STUDY DESIGN AND SETTINGS: Retrospective review of surgical series. The guidelines of the American Academy of Otolaryngology-Head and Neck Surgery for the evaluation of results of treatment of conductive hearing loss were used. RESULTS: Pure tone average (0.5 to 3 kHz) air-bone gap was 6.1 dB in the partial stapedectomy and 6 dB in the stapedotomy group. The air-bone gap (ABG) closure rate did not differ between the 2 groups, except at 4 kHz, where stapedotomy group showed greater closure (P 0.003). Mean postoperative ABG gain was significantly (P < 0.05) higher in the stapedotomy group at 2, 3, and 4 kHz. Mean postoperative air-conduction gain did not differ significantly. Mean postoperative bone conduction (BC) change (1, 2, and 4 kHz) was 3.68 dB in partial stapedectomy and -0.02 dB in stapedotomy group, the difference being significant (P 0.007). Differences in BC change between the 2 groups were significant at each frequency. CONCLUSIONS: Similar good results can be obtained in experienced hands using either partial stapedectomy or stapedotomy technique. ABG closure rates were analogous in the 2 techniques as well as the complication rate. Although stapedotomy obtain better results at high frequencies, partial stapedectomy is associated with increased BC threshold at all frequencies.

Audiometry, Pure-Tone↗