Analysis Of CT Imaging Changes Of Psoas Major Muscles In Patients With Lumbar Disc Herniation Mainly Based On Low Back Pain And Lower Limb Pain

Object:The area changes of CT imaging of the psoas major muscles in patients with lumbar disc herniation(LDH),which are mainly low back pain and lower limb pain,were compared,and the correlation was analyzed.Methods:Retrospective analysis of CT imaging data of 120 patients with lumbar disc herniation and 60 normal healthy persons who underwent lumbar or abdominal CT scans at the China-Japan Union Hospital of Jilin University from July 2017 to August 2019.The age range was 45 to 65 years old,all women.According to the research content and direction,the study subjects were divided into 3 groups.LDH patients were divided into 2 groups according to the symptoms of low back pain and lower limb pain,with 60 cases in each group and 60 normal healthy people in the control group.The scanned CT image of the psoas major was reconstructed on the workstation for 3D CT reconstruction.According to the psoas major movement,the maximum cross-sectional area of the psoas major was taken perpendicular to the longitudinal axis of the psoas major,and the L5 vertebral body was taken from the bottom The cross-sectional area,the maximum cross-sectional area of the psoas major muscle is compared with the cross-sectional area of the L5 vertebral body.As the index of the largest cross-sectional area of the psoas major muscle,Image J software is used to calculate the cross-sectional area of the psoas muscle and the vertebral body in the CT image.Compare the maximal cross-sectional area index of the psoas major in the low back pain group,the lower limb pain group,and the control group.Then the patients were sub-grouped according to the pain time and pain Visual Analogue Score(VAS),and the maximal cross-sectional area index of psoas muscle was compared between each group.Results:(1)There was no statistical significance in the distribution of baseline data among the three groups of subjects(P> 0.05).(2)There were 60 cases in the low back pain group,60 cases in the lower limb pain group,and 60 cases in the normal healthy group.The differences in the maximum cross-sectional area index of the psoas major muscle among the three groups were statistically significant [(0.58 ± 0.09),(0.63 ± 0.07),(0.74 ± 0.08),F = 66.156,P = 0.000)](3)Pain time(short,medium,long)in the low back pain group The maximum cross sectional area index of the psoas major muscle in the three groups was statistically significant [(0.68 ± 0.04),(0.58 ± 0.03),(0.48 ± 0.03),F = 162.32,P = 0.000];the degree of pain(light,medium,and heavy)of the maximal cross-sectional area index of the psoas major was also statistically significant [(0.68 ± 0.04),(0.56 ± 0.04),(0.46 ± 0.03),F = 124.78,P = 0.000].(4)Pain time(short,medium,long)in the lower limb pain group.The maximal cross-sectional area index of the psoas major muscles in the three groups [(0.67 ± 0.07),(0.63 ± 0.07),(0.60 ± 0.07)],short and medium,There was no statistically significant difference between medium and long(P> 0.05),while short and long were statistically significant(P <0.05);the degree of pain(light,medium,and heavy)was compared among three groups [(0.66 ± 0.06),(0.62 ± 0.07),(0.60 ± 0.05)],there was no statistically significant difference between light and medium and medium and heavy(P> 0.05),while light and heavy were statistically significant(P <0.05).Conclusions:The maximal cross-sectional area index of the psoas major muscle in LDH patients was significantly lower than that in the control group,and the atrophy of the psoas major muscle was related to LDH;The correlation between muscle atrophy and lower back pain is greater than lower limb pain,and the pain time and degree of pain in the low back pain group are inversely related to the maximal cross-sectional area index of the psoas major muscle.And the mechanism of the psoas reduction may be different.