[Objective]To analyze the relationship between L5S1 lumbar disc herniation(LDH)and posterior facetjoint(FJ)develop-ment.[Methods]A retrospective analysis was conducted on the clinical data of lateral LDH patients who admitted to our department from 2017 to 2020,additionally,107 cases of lumbar spine MRI without LDH were collected as the normal group.The FJ angle of L5S1 and adja-cent L4/5 were measured on MRI to calculate the difference in FJ between the left and right sides.A difference greater than 10° is defined as bilateral FJ asymmetry.Univariate comparison and multiple factor logistic regression were used to analyze the relevant influencing factors of L5S1 LDH.[Results]A total of 102 cases were included in the LDH group,while 107 cases were in the normal group.As results of univariate comparison,there were not significant differences in terms of age,gender,BMI,L4/5(∠C),L5S1(∠C),and L4/5(|Lα-∠β|)and the differences in L4/5 asymmetry between the two groups(P＞0.05),however,the LDH group proved significantly greater than the normal group regarding to L5S1(|Lα-Lβ|)[(10.2±5.4)° vs(4.9±7.6)°,P＜0.001],incidence of L5S1 asymmetry[cases(％),59(57.8)vs 14(13.0),P＜0.001],absolute dif-ference of ∠C between L4/5 and L5S1[(18.0±13.6)° vs(14.1±9.3)°,P=0.016],absolute difference of ∠α between L4/5 and L5S1[(12.0±8.2)° vs(8.7±5.9)°,P＜0.001],absolute difference of ∠β between L4/4/5 and L5S1[(9.4±7.8)° vs(7.4±5.0)°,P=0.026].Multivariate logistic regression analysis showed that the L5S1(|∠α-∠β|)(OR=1.245,P＜0.001)and the absolute difference between L4/5 and L5S1 ∠C(OR=1.049,P＜0.001)were the independent risk factors for L5S1 lateral LDH.[Conclusion]The L5S1 lateral LDH is associated with L5S1(|∠α-∠β|)and the abso-lute difference between L4/5 and L5S1∠C.
NETL
NSTL
万方数据
