Spondylolysis of the Fourth Lumbar Vertebra



- Discussion:
    - disruption of the pars interarticularis occurs less frequently at L4;
    - symptomatic spondylolysis at this level is reportedly more common in young adults than in children or adolescents;
    - in 25% of affected patients, it is associated with either partial or complete sacralization of L5;
    - it may be unilateral or bilateral;
    - most common in males sustaining trauma;
    - intensity of pain in back & of functional impairment are greater w/spondylolysis is at L4 as compared to L5;
          - incidence of  neurological signs compared to L5 spondylolisis;
    - progression to Grade-I Spondylolisthesis has been reported in adults, but severe slipping is unusual;
    - neurological signs and symptoms are more frequent, however, when there is progression to Spondylolisthesis




Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Wednesday, December 21, 2011 12:22 pm