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Updated: Nov 26, 2025
Step-by-Step Stapedotomy through Transcanal Exclusive Endoscopic Approach
Published on: March 5, 2022
Primary endoscopic stapedotomy using 3 mm nasal endoscope: Audiologic and clinical outcomes
Pradeep Pradhan1, Chappity Preetam1, Pradipta Kumar Parida1
1Department of ENT and Head Neck Surgery, All India Institute of Medical Sciences, Bhubaneswar, Odisha, 751019, India.
Objective:
To report the use of a 3 mm rigid nasal endoscope in primary endoscopic stapedotomy and clinical and audiological outcomes.
Materials And Methods:
Thirty patients diagnosed with primary otosclerosis underwent endoscopic stapedotomy that was performed using a 3 mm nasal endoscope (Karl Storz). At 6 months follow-up, the patients were evaluated for intraoperative findings, postoperative hearing outcomes and complications.
Results:
Canaloplasty was performed in 2 (6.66%) patients, and no curettage of the canal wall was required in 12 (40%) patients. Transposition of the chorda tympani nerve was conducted in 11 (36.66%) patients. The average duration of surgery was 36 min (range 31-65 min). The air-bone gap (ABG) was 35 dB (range 24-50 dB) preoperatively and 14.63 dB (range 9-20 dB) postoperatively (p = 0.00). At 6 months follow-up, <20 dB ABG was achieved in 93.33% of the patients. No major intraoperative/postoperative complications were detected.
Conclusion:
A 3 mm rigid nasal endoscope can be effectively used in stapedotomy to obtain adequate audiological outcomes. It can be considered as a better alternative to the standard microscope or 4 mm endoscope in preserving the posterior canal wall and chorda tympani nerve while minimizing operative time without causing significant complications.
