Ossicles


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Related to Ossicles: cochlea

auditory ossicles

The 3 diminutive bones of the middle ear. The malleus is attached to the inner face of the tympanic membrane at the manubrium and articulates at its head with the body of the incus; the incus in turn articulates at its lenticular process with the head of the stapes; the stapes is attached at its base by a ligamentous ring to the oval window of the vestibule. Sound waves channelled though the external acoustic canal (auditory duct) to the tympanic membrane are amplified by the auditory ossicles.

The vibrations received at the oval window are passed down the cochlea; the relative movement of the basilar and tectorial membranes leads to deflection of the stereocilia of the hair cells in the organ of Corti, which generates an influx of K+ ions and production of electrical signals that travel via the cochlear nerve to the auditory complex.

Ossicles

The three small bones of the middle ear: the malleus (hammer), the incus (anvil) and the stapes (stirrup). These bones help carry sound from the eardrum to the inner ear.
Mentioned in: Otitis Media, Stapedectomy
References in periodicals archive ?
Perforation of the globe at the level of the scleral ossicle was considered a possible cause.
Anatomy of the scleral ossicles in brazilian birds.
ohioensis ossicles (12 of 15 basal plates, 14 of 20 radial plates) are encrusted by minute, threadlike, calcareous tubes (Fig.
of Patients Percentage Attic 5 10% Atticoantral 10 20% Sinus tympani 10 20% Extensive 25 50% Table 3 Ossicle Involved Percentage Malleus 5 10% Incus 30 60% Stapes 20 40% Table 4 Features HRCT Intraoperative False False Finding Finding Positive Negative Soft Tissue 50 50 0 0 Tegmen 10 9 1 0 erosion Sigmoid 15 20 0 5 sinus erosion Facial canal 10 14 0 4 erosion LSCC 3 2 1 0 dehiscence Features Sensitivity Specificity PPV NPV Soft Tissue 100 100 100 100 Tegmen 100 97.6 90 100 erosion Sigmoid 80 100 100 87.5 sinus erosion Facial canal 77.8 100 100 90.9 erosion LSCC 100 97.9 66.7 100 dehiscence
During ossiculoplasty, based on the condition of the ossicles, there are different methods ranging from minimal applications, such as bone cement or prosthesis applications performed in the absence of ossicles.
The team used this approach for the optical measurement of nanometer-sized ossicle vibrations.
They cut the specimens horizontally with a thickness of 24 [micro]m per slice and analyzed them in an interval of 120 [micro]m or 240 [micro]m to evaluate the blood supply of the ossicles in the tympanic cavity.
Dalal, "Gross anatomy of the interphalangeal joint of the great toe: implications for excision of plantar capsular accessory ossicles," Clinical Anatomy, vol.
These could have been incorporated at the expense of pathologies which are rarely encountered, such as sesamoiditis and accessory ossicles. Further, all of the upper limb conditions described involved either the hand or wrist, and carpal tunnel syndrome was (mistakenly) included in the lower limb section.
In chronic cases that are refractory to conservative treatment, surgical intervention yields good results, particularly for patients with bony or cartilaginous ossicles. Excision of these ossicles produces resolution of symptoms and return to activity in several weeks (SOR: C, several case series).