winged scapula

n.
  1. A condition characterized by protrusion of the medial border of the scapula from the thorax as the scapula rotates out, caused by paralysis of the anterior serratus muscle.scapula alata
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.