What are the common defects of segmentation

Block vertebra, unilateral bar, and unilateral bar and hemivertebra (Fig. 42-1).

Defects of Segmentation

Block vertebra

Unilateral bar

Unilateral bar & hemivertebra



r^v ojC

Bilateral dF'g


failure of 9 b

Ja┬╗ M failure of

segmentation ^Lp





Figure 42-1. Defects of segmentation. (From McMaster MJ. Congenital scoliosis. In: Weinstein SL, editor. The Pediatric Spine: Principles and Practice. New York: Raven Press; 1994. p. 227-44, with permission.)

How To Win Your War Against Back Pain

How To Win Your War Against Back Pain

Knowing the causes of back pain is winning half the battle against it. The 127-page eBook, How To Win Your War Against Back Pain, explains the various causes of back pain in a simple manner and teaches you the various treatment options available. The book is a great pain reliever in itself. The sensible, practical tips that it presents will surely help you bid good-bye to back pain forever.

Get My Free Ebook

Post a comment