Langenbeck's triangle

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Lang·en·beck's triangle

(lăng′ən-bĕks′, läng′-)
A triangle formed by lines drawn from the superior iliac spine to the surface of the great trochanter and to the neck of the femur.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.