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The name literally translates into “imperfect bone formation.”  This is a group of genetic disorders that target the stability of someone’s bones. People living with this condition are said to have a connective tissue disorder with a deficiency or mutation in one or more collagen gene, (specifically COL1A1 and COL1A2}. They have bones that break often and easily; usually from mild trauma or sometimes with no cause at all.  There are at least eight recognized forms, all with their own signs and symptoms.

The Journal of Neurology, Neurosurgery, and Psychiatry published an article (J Neurol Neurosurg Psychiatry 1999;66:357-364 doi:10.1136/jnnp.66.3.357) naming, “Basilar Impression as the commonest of the craniocervical malformations,” and stating it to be, “the upward displacement of basilar and condylar portions of the occipital bone causing an infolding of the foramen magnum and leading to a translocation of the upper cervical spine into the brainstem.” 


  • http://jnnp.bmj.com/content/66/3/357.full
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Bridges are built as a means to assist people in getting over the things that obstruct their path. We are constantly facing obstacles when it comes to our health, so we decided to build a bridge! Chiari Bridges is a non-profit network built by Chiarians for Chiarians. Our goal is to provide information, substantiated by published studies, in a way that is easy to understand. We encourage readers, to not only read our articles, but look up every study for themselves and read that too. Print it out and sit down with a highlighter; read it as many times as necessary until you understand; then use it to talk to your doctors. Our doctors are under no obligation to read our articles, but they should be willing to read officially published studies from journals, especially those specific to their profession. As many of our authors are patients as well, all authors sharing original pieces will be writing under pseudo-ghost names, to protect them from being black-listed by their doctors. Chiari Bridges is not affiliated with any physician or medical group. You should in no way use this site as a replacement for diagnosis, treatment, or medical from a qualified medical professional. The information provided on our website is strictly for educational purposes, in order to help further the understanding of Chiari, and its associated conditions. Our goal is to share our collective experiences and the information we have gathered, with those in need of answers, that it may increase your knowledge and guide you in conversations with your doctors.