![]() ![]() And the stapedius muscle, which normally stabilizes the stapes, can become weakened due to damage as well. The tensor timpani muscle normally dampens loud sounds, and its function can be impaired when it's damaged. Hyperacusis: Resulting from infection or trauma, hypersensitivity to noises can occur when certain muscles in the inner ear become damaged.Injuries may cause ossicular chain discontinuity, either directly or as a result of subsequent inflammation in the middle ear. Trauma: Head trauma can lead to an injury, such as a skull fracture.Congenital malformation: Birth defects can include abnormalities such as malformation or absence of one or more of the ossicles, potentially with ossicular chain discontinuity.If untreated-and depending on their location-they may enlarge and impact the ossicles, affecting their function and leading to hearing loss. Cholesteatoma: Cholesteatomas are noncancerous growths in the middle ear.Most often, this causes the base of the stapes to become affixed to the oval window, preventing the transmission of sound vibrations. Otosclerosis: This abnormal growth of tissue in the middle ear can severely impact the mobility of the ossicles, leading to hearing loss.COM can cause erosion of the malleus, which can spread an infection to the meninges, the protective covering surrounding the brain. This leads to damage of the ossicles over the long-term. ![]() Each bone is named in Latin for its shape: Malleus means hammer or mallet Incus means anvil Stapes means stirrup.
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