Question

which of the following pathological conditions is the loss of mobility of the stapes?
a anacusis
b otitis media
c otosclerosis
d labyrinthitis

Explanation:

• Anacusis refers to total deafness.
• Otitis media is inflammation of the middle - ear.
• Otosclerosis is a condition where there is abnormal bone remodeling in the middle ear, specifically affecting the stapes (a small bone in the middle ear). This can lead to a loss of mobility of the stapes, causing conductive hearing loss.
• Labyrinthitis is inflammation of the inner ear (labyrinth).

Answer:

C. otosclerosis