Abstract:

Objective To evaluate the value of cross⁃sectional area（CSA）of multifidus muscle in predict⁃ ing postoperative recurrence in patients with lumbar disc herniation treated by PETD so as to provide reliable basis for clinical treatment and reduce postoperative recurrence rate. Methods A total of 155 patients with L5 ⁃S1 disc herniation treated by PETD in the Department of Pain，Xuzhou Medical University Hospital from January 2016 to February 2020 were divided into recurrent group（n = 17）and non⁃recurrent group（n = 138）. The clinical data were analyzed and compared. MRI was performed in all patients，and the CSA and the Degree of Fat Infiltration （DFF）of multifidus muscle of lumbar disc herniation were measured by Image J software. Logistic regression analysis was used to analyze the independent risk factors of recurrence，and ROC was used to evaluate the predictive value of multifida CSA. Results There was no significant difference in sex，course of disease，time of operation， time for resuming work ，location of intervertebral disc herniation and height of intervertebral space between recurrent group and non⁃recurrent group，but there were significant differences in age，BMI，smoking，drinking， diabetes，CSA and DEF between the two groups. ROC showed that CSA had high sensitivity and specificity in predicting recurrence after PETD. Conclusion CSA is an independent risk factor for recurrence after PETD and can accurately predict the recurrence rate after PELD. 

Key words:

polyschisis muscle, cross ?sectional area, lumbar disc herniation, percutaneous endo? scopic transforaminal discectomy, postoperative recurrence