Certified Surgical Technologist (CST) Practice Exam

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What is the definition of otosclerosis?

Earache
Tinnitus
Tearing of tympanic membrane
Bony overgrowth of stapes

The correct answer is: Bony overgrowth of stapes

Otosclerosis is defined specifically as a bony overgrowth of the stapes, which is one of the small bones in the middle ear that plays a crucial role in hearing. This overgrowth can lead to a fixation of the stapes, resulting in conductive hearing loss as sound is unable to properly be transmitted from the middle ear to the inner ear. The condition is often hereditary and typically affects young adults, leading to progressive hearing issues. This differentiation from other ear-related ailments is important for understanding the pathology and potential treatment options for patients experiencing hearing loss.