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What is the Definition of Spondylolysis and Spondylolisthesis?

April 26, 2017definition spondylolisthesis spondylolysis

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What is the Definition of Spondylolysis and Spondylolisthesis?

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Spondylolysis refers to a defect in a specific part of the facet joint called the pars interarticularis. This defect can cause instability in the vertebra, much like a loose hinge in a door. Spondylolisthesis is an anterior or posterior slipping or displacement of one vertebra or another.