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Radiology News


Ulnar Variance

A short ulna, or minus ulnar variance, leads to increased application of force to the radial side of the wrist and to the lunate bone, which may underlie the association of negative ulnar variance and Kienbocks disease. This is a case showing short ulna or negative ulnar variance.  On the other hand, long ulna, or positive ulnar variance, causes the ulnar impaction syndrome.

Ulnar Variance Reviewed by Sumer Sethi on Wednesday, January 05, 2011 Rating: 5

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