2025年1月19日 · The otic capsule or osseous (bony) labyrinth refers to the dense bone of the petrous temporal bone that surrounds the membranous labyrinth of the inner ear. It is surrounded by the less dense and variably pneumatized petrous apex and mastoid part of the temporal bone.

The bony labyrinth (also osseous labyrinth or otic capsule) is the rigid, bony outer wall of the inner ear in the temporal bone. It consists of three parts: the vestibule, semicircular canals, and cochlea.

Otosclerosis is an otodystrophy of the otic capsule and is a cause of conductive, mixed or sensorineural hearing loss in the 2nd to 4th decades of life. Otosclerosis is categorised into two types, fenestral and retrofenestral. Imaging plays an ...

Within the otic capsule are the usual labyrinthine endings, including an auditory papilla. The auditory papilla lies in a path between the oval window and an opening (the round window) in the posterior wall of the otic capsule.

Recognition of the otic capsule is important because its involvement in petrous temporal bone fractures increases the likelihood of serious complications. The otic capsule (blue arrow) is the dense bone (compared to the petrous apex and mastoid part) that surrounds the membranous inner ear structures.

2020年11月15日 · Otosclerosis is a pathological bone remodeling process in which the normal, dense endochondral bone of the otic capsule is replaced by one or more foci of irregularly laid spongy bone that subsequently hardens abnormally and impairs function; the condition most commonly involves the stapes region.

The bony otic capsule represents a major anatomic and physiological barrier to the inner ear, isolating labyrinthine fluids and tissues from adjacent structures, such as the middle ear and the brain.

2024年12月8日 · Otic capsule thickness of >2.3 mm showed the best trade-off between sensitivity and specificity to distinguish otosclerosis from individuals with normal hearing (Table 3).

2020年5月22日 · Otic capsule–violating fracture in a 20-year-old man after a fall. Coronal CT image shows a subtle oblique fracture (arrows) through the otic capsule, traversing the semicircular canal.

2025年3月26日 · The otic capsule is a dense bony structure that encases the inner ear, offering mechanical support and a controlled environment for auditory and vestibular function.