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Step-by-Step Stapedotomy through Transcanal Exclusive Endoscopic Approach

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Right versus left stapes surgery: is there a difference?

Alexandre Karkas¹, Karim Chahine, Christian Adrien Righini

¹Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center of Grenoble, Grenoble, France. akarkas@chu-grenoble.fr

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology

|May 6, 2009

Summary

Stapes surgery for otosclerosis yields similar auditory results for both right and left ears. This study found no significant difference in hearing outcomes or sensorineural hearing loss between the two sides after surgery.

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Area of Science:

Otolaryngology
Audiology
Surgical Outcomes

Background:

Otosclerosis is a condition affecting the stapes bone, leading to hearing loss.
Stapes surgery is a common treatment for otosclerosis.
Understanding potential differences in surgical outcomes between ears is crucial for patient counseling and surgical planning.

Purpose of the Study:

To investigate if there are statistically significant differences in auditory results between right and left ears following stapes surgery for otosclerosis.
To compare the changes in air-bone gap (ABG) and bone conduction (BC) thresholds between surgically treated right and left ears.
To assess and compare the incidence of postoperative sensorineural hearing loss between the right and left ears.

Main Methods:

A retrospective case-review of 894 stapes surgeries was conducted.
Patients were grouped by the operated ear (right vs. left) and categorized by preoperative air-bone gap (ABG) and bone conduction (BC) levels.
Analysis of variance (ANOVA) and chi-squared tests were used to compare postoperative outcomes, including changes in ABG and BC, and the incidence of sensorineural hearing loss.

Main Results:

No statistically significant differences were found in the change of air-bone gap (DeltaABG) or bone conduction (DeltaBC) between the right and left ears (p = 0.742 and p = 0.426, respectively).
The incidence of postoperative sensorineural hearing loss (defined as a >10 dB fall in BC) was similar between the right (10 cases) and left ears (9 cases), with no statistically significant difference (p = 0.973).

Conclusions:

Stapes surgery for otosclerosis demonstrates comparable functional outcomes between the right and left ears.
The laterality of stapes surgery does not appear to influence the overall auditory results or the risk of sensorineural hearing loss.