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2016, Volume 7, Number 3, Page(s) 178-180
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Atlantoaxial Instability: Clinical Implications of Newer Understanding
Atul Goel
Department of Neurosurgery, Seth G.S. Medical College and K.E.M Hospital, Parel, Mumbai
Keywords: Atlantoaxial instability, craniovertebral junction, odontoid process

Atlantoaxial joint is the most mobile joint of the spine. The joint architecture is supremely designed to permit circumferential movements that allow the human to say both ‘Yes’ and ‘No’ and a host of other gestures. The atlas and axis bones function in unison and the bones and ligaments are specially crafted to allow movements, keep head firmly attached to the spine and permit a safe and unrestricted passage to the most crucial arteries and nerves and spinal cord. To conduct its activity of circumferential movements the joint surfaces are flat and round and there is no restriction to movements that can happen when the joint is of a hinge or a ball and socket type.

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