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Related to Pars interarticularis: Ligamentum flavum, spondylolisthesis
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A small tongue-shaped IAF was present on the right pars interarticularis. The facet was coronally oriented and had a smooth surface and margins that lacked any degenerative changes.
Isthmic spondylosis (type II) describes a lesion in pars interarticularis. Subtypes are defined as Type II-A (lytic) when there is a fatigue fracture of pars articularis and Type II-B when pars is elongated as a consequence of repeated microfractures and healing.
A FEM study done by Saki et al [41] by studying the Von Mises stresses in Pars interarticularis which was found to be higher in L5 compared to other levels during complex loading.
Stress reactions involving the pars interarticularis in young athletes.
Voorhies, "Unilateral removal of pars interarticularis," Journal of Neurosurgery: Spine, vol.
STIR sequences demonstrate high intensity fluid signal within the spinous process or pars interarticularis, respectively, if apophysitis or spondylolysis is present.
(14) In type 1 fractures (Figure 11), the fracture extends through the posterior C2 vertebral body rather than the pars interarticularis extension of the hangman's fracture.
Patients were assessed every 6-12 weeks to assess regression of symptoms and bony healing (which was confirmed radiographically by the presence of bridging bone on the oblique view of the defect on the pars interarticularis).
Spondylolysis is a defect of the pars interarticularis of the spine.
The symptoms associated with spondylolisthesis are caused by chronic muscle spasm as the body attempts to limit motion around a painful pseudoarthrosis of the pars interarticularis. Pain may also derive directly from impingement of the fibrous pars non-union, as nerve endings have been identified there.
Spondylolysis is an anatomic defect in the pars interarticularis. A spondylotic or isthmic defect is the term used to describe a radiolucent gap within the pars interarticularis with sclerosis of the adjacent bone edges.
(2005) found that fast bowlers had twice the prevalence of pars interarticularis abnormalities versus controls on the non-dominant side (81% vs.

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