Abstract:Objective: TO investigate the efficacy of PELD in the recurrence and reoperation of postoperative lumbar disc herniation.Methods: A retrospective analysis was performed on 11 patients with recurrence of PELD surgery for lumbar disc herniation from April 2015 to June 2018. These patients again chose PELD surgery for treatment.Improved MacNab excellent and good rate was used to evaluate the clinical excellent and good rate of patients undergoing reoperation, VAS was used to evaluate the improvement of patients' symptoms, and ODI score was used to observe the postoperative function of patients.Surgical complications and recurrence were recorded.The correlation between postoperative remission and BMI, smoking history, age, type of remission and postoperative activity intensity was analyzed.Results: After 6-24 months of follow-up, 81% of the improved MacNab were excellent and good.The VAS and ODI scores in the last postoperative follow-up were significantly lower than those before surgery.There was a statistical difference in postoperative activity intensity between patients with postoperative re-herniation and BMI, but no statistical difference in smoking history, age and herniation type.One case of cerebrospinal fluid leakage caused by intraoperative rupture of dural membrane, and one case of recurrence 1 month after surgery;No obvious residual, decreased intervertebral space, intervertebral instability, nerve injury, infection, hematoma and other complications were found.Discussion:Postoperative re-herniation of PELD usually occurs about 10 months after surgery;In addition, higher BMI and higher postoperative activity intensity are likely to cause re-prominence, and it has been proved through clinical practice that the selection of PELD surgery for re-prominence can achieve satisfactory clinical efficacy.