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L5-S1: There is a small right paramidline posterior disc herniation measuring 13 x 4 mm, there is 5 mm of inferior disc migration, and the disc material abuts the descending S1 nerve roots, right greater than left, although no nerve root displacement or significant canal narrowing. There is mild left neural foraminal narrowing.
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Hello. Thank you for your message.
The L5 and S1 vertebrae are connected in the back of the spine by two joints called facet joints (or zygapophyseal joints). More information below:
https://www.spine-health.com/conditions/spine-anatomy/all-about-l5-s1-lumbosacral-joint
Helena
February 17, 2018 - 5:52amThis Comment