Pars interarticularis: Difference between revisions
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==Overview== | ==Overview== | ||
The '''pars interarticularis''' is the part of [[vertebra]] located between the inferior and superior [[articular process]]es of the [[facet joint]].<ref>Pars interarticularis. Stedman's Medical Dictionary. Available at: [http://www.emedicine.com/asp/dictionary.asp?keyword=Pars+interarticularis http://www.emedicine.com/asp/dictionary.asp?keyword=Pars+interarticularis]. Accessed on: April 9 | The '''pars interarticularis''' is the part of the [[vertebra]] located between the inferior and superior [[articular process]]es of the [[facet joint]].<ref>Pars interarticularis. Stedman's Medical Dictionary. Available at: [http://www.emedicine.com/asp/dictionary.asp?keyword=Pars+interarticularis http://www.emedicine.com/asp/dictionary.asp?keyword=Pars+interarticularis]. Accessed on: April 9, 2007.</ref> | ||
==Anatomy== | |||
In the [[transverse plane]], it lies between the [[Lamina of the vertebral arch|lamina]] and [[Pedicle of vertebral arch|pedicle]]. It is abnormal in [[spondylolysis]], either due to [[fracture (bone)|fracture]] or [[congenital|congenitally]].<ref>Spondylolysis. Stedman's Medical Dictionary. URL: [http://www.emedicine.com/asp/dictionary.asp?keyword=spondylolysis http://www.emedicine.com/asp/dictionary.asp?keyword=spondylolysis]. Accessed on: April 14, 2007.</ref> | |||
==Pathophysiology== | |||
It is abnormal in [[spondylolysis]], either due to fracture or congenitally. | |||
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, | ==Imaging== | ||
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,<ref>{{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}}</ref> its hindlegs the spinous process, its nose the transverse process and its forelegs the inferior articular facet.<ref>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.</ref> | |||
==See also== | ==See also== | ||
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==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
[[Category:Skeletal system]] | [[Category:Skeletal system]] | ||
{{WH}} | {{WH}} | ||
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Latest revision as of 11:47, 15 April 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]
Overview
The pars interarticularis is the part of the vertebra located between the inferior and superior articular processes of the facet joint.[1]
Anatomy
In the transverse plane, it lies between the lamina and pedicle. It is abnormal in spondylolysis, either due to fracture or congenitally.[2]
Pathophysiology
It is abnormal in spondylolysis, either due to fracture or congenitally.
Imaging
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,[3] its hindlegs the spinous process, its nose the transverse process and its forelegs the inferior articular facet.[4]
See also
References
- ↑ Pars interarticularis. Stedman's Medical Dictionary. Available at: http://www.emedicine.com/asp/dictionary.asp?keyword=Pars+interarticularis. Accessed on: April 9, 2007.
- ↑ Spondylolysis. Stedman's Medical Dictionary. URL: http://www.emedicine.com/asp/dictionary.asp?keyword=spondylolysis. Accessed on: April 14, 2007.
- ↑ Macleod S, Hendry G (1982). "Congenital absence of a lumbar pedicle. A case report and a review of the literature". Pediatr Radiol. 12 (4): 207–10. PMID 6752854.
- ↑ Capobianco JD. OMM Board Review. Available at: [1]. Accessed on: April 9, 2007.