Hostname: page-component-6766d58669-nf276 Total loading time: 0 Render date: 2026-05-20T17:40:42.452Z Has data issue: false hasContentIssue false

Pathology of the otic capsule

Published online by Cambridge University Press:  29 June 2007

C. M. Milroy*
Affiliation:
London
L. Michaels
Affiliation:
London
*
Dr C. M. Milroy, Department of Histopathology, University College and Middlesex School of Medicine, Rockefeller Building, University Street, London WC1E 6JJ.

Abstract

The otic capsule is unique in retaining calcified cartilage, known as globuli interossei, throughout life and shows changes consequently, which are peculiar to it. In Paget's disease of bone, the otic capsule appears resistant to involvement and this occurs with extensive disease at a late stage. In contrast, otosclerosis is a new bone formation of unknown cause that is limited to the otic capsule. In osteogenesis imperfecta, the poor formation of collagen leads to abnormally thin bony trabeculae with a poorly formed otic capsule. In osteopetrosis, the otic capsule is greatly expanded by increased globuli interossei, as a result of defective osteoclast function. When fractured the middle layer of the otic capsule does not form callus, but heals by fibrosis.

Information

Type
Main Articles
Copyright
Copyright © JLO (1984) Limited 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable