Biblioteca Virtual en Salud

[Objective]To study the pathogenesis of lumbar degenerative spondylolisthesis(LDS)through the degeneration degree of lumbar facet joints and the changes of the joint sagittal angle of little zygapophysial joints and the endplate hypozygal angle in patients with LDS and lumbar disc herniation (LDH).[Methods]The image data of 79 patients with lumbar degenerative diseases were collected from October 2009 to November 2011.There were 42 patients with L4-5 LDS(experimental group)and 37 patients in same age with L4-5 LDH(control group).The L4-5 facet joints were graded by Weishaupt ect.lumbar facet joint osteoarthritis imaging grading method.The joint sagittal angle of L4-5 little zygapophysial joints and the L4endplate hypozygal angle were detected by CT.The L4-5 facet joint osteoarthritis grading,joint sagittal angle of lumbar little zygapophysial joints,L4 endplate hypozygal angle and bilateral symmetry between two groups were compared.[Results]There was no grade 0 of facet joint osteoarthritis in both two groups.The numbers of grade 1,2,3 in experimental group were 4,20,18 cases,respectively,while the numbers in control group were 21,14,2 cases.There was significant difference between the numbers of two groups(P ＜ 0.05).The joint sagittal angle of L4-5 little zygapophysial joint,deviation angle of sagittal angle asymmetry and L endphtehypozygal angle in experimental group(26.62°± 1.67°,8.79°± 4.28°,116.92±6.86°)had statistical significance compared with those in control group(45.07° ± 7.32°,5.14° ± 4.28°,104.95° ± 4.97°)(P ＜0.01).The deviation angle of endplate hypozygal angle asymmetry in experimental group had no statistical significance compared with that in control group(P ＞ 0.05).[Conclusions] The sagittal orientation of lumbar facet joint angle and the endplate hypozygal angle increasing have important significance in LDS.