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fissure
(redirected from orbital fissure)

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.01 sec.
fissure
1. Anatomy a narrow split or groove that divides an organ such as the brain, lung, or liver into lobes
2. a small unnatural crack in the skin or mucous membrane, as between the toes or at the anus
3. a minute crack in the surface of a tooth, caused by imperfect joining of enamel during development

fissure [′fish·ər]
(geology)
A high, narrow cave passageway.
An extensive crack in a rock.
(metallurgy)
A small cracklike discontinuity with a slight opening or displacement of the fracture surfaces.


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9) Geraghty and Dolan reported that the complete diagnostic criteria for MSH are (1) enlargement of the vertical orbit, (2) enlargement of the superior orbital fissure, (3) elevation of the canine fossa, (4) enlargement of the pterygopalatine fissure, and (5) lateralization of the infraorbital neurovascular canal.
Currie JN, Coppeto JR, Lessell S: Chronic syphilitic meningitis resulting in superior orbital fissure syndrome and posterior fossa gumma: a report of two cases followed for 20 years.
Discussion The maxillary division of the Vth cranial nerve exits the superior maxillary foramen and enters the orbit via the inferior orbital fissure.
 
 
 
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