pars interarticularis


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Related to pars interarticularis: Ligamentum flavum, spondylolisthesis

pars in·ter·ar·tic·u·la'·ris

Avoid using the simple word pars in the special sense of pars interarticularis.
The segment of bone between the superior and inferior articular facets, especially in the lumbar spine.

pars interarticularis

a region of the vertebra between the superior and inferior facet joints that is susceptible to trauma.

pars in·ter·ar·tic·u·la·ris

(pahrz in-tĕr-ahr-tik'yū-lā'ris)
The region between the superior and inferior articulating facets of a vertebra; frequently the site of fracture in spondylolysis.

pars interarticularis

The region between the superior and inferior articulating facets of a vertebra; the region where fracture frequently occurs with spondylolysis.
See also: pars
References in periodicals archive ?
Given the key role that the pars interarticularis plays in solidifying the architecture of the spinal column, there is not much anatomic data available on this region in the spine literature.
Further biomechanical experimental or numerical investigations need to be performed in order to assess what remaining percentage of pars interarticularis is necessary for long-term stability.
In addition to the distinctive pars interarticularis defect, other imaging findings described in cervical spondylolysis are hyposplasia of the pedicles, dysplastic laminae, and spina bifida.
A dysplasia mechanism with stress fractures of a weakened pars interarticularis is another possibility.
The pars interarticularis is defined as the parts of the neural arch that lie between the superior and inferior articular facets.

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