Baastrup's sign

Baas·trup's sign

An indication on x-ray of bridging of the spinous processes in adjacent lumbar vertebrae, associated with back pain and degenerative diseases of the spine. Also called Baastrup's syndrome.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.