Spina bifida occulta. The arrows point to a swelling above the buttocks. (From Waxman SG. Clinical Neuroanatomy. 26th ed. http://www.accessmedicine.com. Copyright © The McGraw-Hill Companies, Inc. All rights reserved.) Source: SPINA BIFIDA, The Color Atlas of Physical Therapy Citation: Shamus E. The Color Atlas of Physical Therapy; 2015 Available at: http://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/1491/p9780071813518-ch253_f002.png&sec=90329144&BookID=1491&ChapterSecID=90329118&imagename= Accessed: March 01, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved