Pars interarticularis

Pars interarticularis

The pars interarticularis is the part of vertebra located between the inferior and superior articular processes of the facet joint. [EMedicineDictionary|Pars+interarticularis] In the transverse plane, it lies between the lamina and pedicle. It is abnormal in spondylolysis, either due to fracture or congenitally. [EMedicineDictionary|spondylolysis]

On an anterior oblique radiograph of the lumbar spine, the pars is the neck of the imaginary Scottie dog;the Scottie dog's eye is the pedicle, [cite journal |author=Macleod S, Hendry G |title=Congenital absence of a lumbar pedicle. A case report and a review of the literature |journal=Pediatr Radiol |volume=12 |issue=4 |pages=207–10 |year=1982 |pmid=6752854] its hindlegs the spinous process, its nose the transverse process, its ear the superior articular facet and its forelegs the inferior articular facet. [Capobianco JD. OMM Board Review. Available at: [http://64.233.167.104/search?q=cache:mO1VF4DwxXcJ:www.md-do.org/NewOMMBoard%2520Review02-REV.htm+Scottie+dog,+spinous+process,+transverse+process,+eye,+hindleg&hl=en&ct=clnk&cd=1] . Accessed on: April 9, 2007.]

ee also

*Terms for anatomical location
*SpondylolysisThe pars interarticularis, sometimes referred to as pars for short, is the part of vertebra located between the inferior and superior articular processes of the facet joint. [1] In the transverse plane, it lies between the lamina and pedicle. It is abnormal in spondylolysis, either due to fracture or congenitally. [2]

References

External links

* [http://meded.ucsd.edu/isp/2005/orthopedic/images/Spondylolysis.jpgThe Scottie dog and spondylolysis] - meded.uscd.edu.


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