Trendelenburg's sign
[trĕn′dl-ən-bûrgz′]
n.
An indication of congenital dislocation of the hip or of hip abductor weakness in which the pelvis on the side opposite to the dislocation will sag when the hip and knee of the normal side are flexed.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.