Exostosis

From Wikipedia, the free encyclopedia

Exostosis Classification and external resources
ICD-9	726.91
DiseasesDB	18621
MeSH	D005096

An exostosis (plural: exostoses) is the formation of new bone on the surface of a bone. Exostosis can cause chronic pain ranging from mild to debilitatingly severe, depending on where they are located and what shape they are.

The overgrowth of outer ear canal bone is the body's way of protecting the ear drum from the frequent rush of cold water against it which commonly occurs with surfing. They develop over many years and result in infections, pain, plugging and hearing loss. See Surfer's Ear. This is what the Orange County Register columnist and world champion surfer Corky Carroll published on the topic, http://ear-hearing-doctors.com/images/Article_3.pdf.

When used in the phrases "Cartilaginous exostosis" or "Osteocartilaginous exostosis", it is considered synonymous with Osteochondroma. (Some sources consider the terms to mean the same thing even without qualifiers, but this interpretation is not universal.)

[edit] Related conditions

Surfer's Ear (Exostosis of the ear canal)
Hereditary multiple exostoses (HME)
Subungal exostosis
Buccal exostosis

[edit] See also

[edit] External links

[http://MHEResearchFoundation.org MHE Research Foundation (Multiple Hereditary Exostoses Website).
[1]
Marquette
-1691025402 at GPnotebook (equates "Exostosis" with "osteochondroma")]