| Objective To investigate cause and to consummate diagnostic standard of lumbar spine stenosis. Methods:A total of 57 cases with no lumbar degeneration by CT scans (group A) from January 2008 to July 2009 and 47 cases with inferior lumbar zygapophysial Joint pre-dislocation and with sciatic neuralgia (group B) from March 2005 to June 2009 were studied. The all CT scans were be at equal pace of terminal plate of vertebral body. The CT scans of each patient were measured.Measurement parameters are distance from hypozygal anterior border to following vertebral body upper posterior border of L4 and L5 with right and left sides(distance between hypozygal and next lumbar). Analyze the relation between distance change and Spinal nerve root symptomatic in group B.Measurements data was analyzed with statistics. The 95% confidence interval of distance between hypozygal and next lumbar was calculated in group B, which was defined as diagnostic standard of lumbar spine stenosis. Result:the distance between hypozygal and next lumbar with left and right at L4,L5 vertebral body in group A:L4:10.874±0.767mm,10.853±0.766mm; L5: 11.544±1.063 mm,11.609±0.963 mm. The distance between hypozygal and next lumbar in group B:L4:3.254±1.518mm; L5:3.568±1.299mm. The right distance between hypozygal and next lumbar in group A is no more than distance of the left side(P>0.05) at the same vertebral body. But the distance at the same side is differential beteen L4 and L5(P<0.05). The distance in group A is obviously greater than in group B at the same vertebral body(P<0.01).The 95% confidence interval was defined as lumbar spine stenosis of less than 5.731mm in L4 and less than 5.705mm mm in L5. Conclusion:inferior lumbar zygapophysialJoint dislocation is one of reasons that cases lumbar spine stenosis; The 95% confidence interval of distance between hypozygal and following lumbar may use as diagnostic standard.
|
PDF Full Text Request