Arnold–Chiari malformation. A Arnold–Chiari malformation. A. Typical brain image with brainstem and cerebellum above the foramen magnum. B. Arnold–Chiari malformation with elongation of cerebellum into foramen magnum (type 1); in type II, which is common in MMC, there is further subluxation of the cerebellum and brainstem into the spinal canal. (Reproduced with permission from Carney PR, & Geyer JD (Eds). Pediatric Practice Neurology. New York, NY: McGraw-Hill; 2010. Figure 8-3 Parts B&C Only.) Source: Neural Tube Disorders and Hydrocephalus, Neurologic Rehabilitation: Neuroscience and Neuroplasticity in Physical Therapy Practice Citation: Nichols-Larsen DS, Kegelmeyer DA, Buford JA, Kloos AD, Heathcock JC, Basso D. Neurologic Rehabilitation: Neuroscience and Neuroplasticity in Physical Therapy Practice; 2016 Available at: https://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/1760/larsen_ch18_fig-18-11.png&sec=120049889&BookID=1760&ChapterSecID=120049834&imagename= Accessed: March 05, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved