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What Is Pars Interarticularis?

December 12, 2009 By 1 Comment


The Pars Interarticularis is a special region of the lamina between the superior and inferior articular processes.

pars interarticularisThe pars interarticularis,  pars for short, is the part of vertebra located between the inferior and superior articular processes of the facet joint.


This is weakest part of the lamina and a fracture or congenital anomaly of the pars may result in a Spondylolisthesis.

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Filed Under: Musculoskeletal Anatomy, Spine Tagged With: , , ,

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  1. Traumatic Spondylolisthesis of the Axis : Bone and Spine says:
    April 12, 2010 at 9:05 am

    [...] of the neural arch of the axis predominately affects the narrow zone of the pars interarticularis and may be associated with more complex soft tissue [...]

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