spondylolysis
(redirected from Pars interarticularis defect)Also found in: Dictionary.
Related to Pars interarticularis defect: spondylolisthesis
spondylolysis
[spon″dĭ-lol´ĭ-sis]the breaking down of a vertebra. adj., adj spondylolyt´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
spon·dy·lol·y·sis
(spon'di-lol'i-sis),Degeneration or deficient development of a portion of the vertebra; commonly involves the pars interarticularis, which can result in a spondylolithesis.
[spondylo- + G. lysis, loosening]
Farlex Partner Medical Dictionary © Farlex 2012
spon·dy·lol·y·sis
(spon'di-lol'i-sis)Degeneration or deficient development of the articulating part of a vertebra.
[spondylo- + G. lysis, loosening]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
spondylolysis
A symptomless congenital deficiency of bone in the arch of the 5th or 4th lumbar vertebra disorder of the spine. The arch is formed of soft fibrous tissue and there is a weak link with adjacent vertebrae so that the condition of SPONDYLOLISTHESIS may occur.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005