Pars interarticularis
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]
Overview
The pars interarticularis 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]
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]
The 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]
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.
External links
- The Scottie dog and spondylolysis - meded.uscd.edu.
