Abstract
Objective: To evaluate the incidence, causes and prognosis of the low back pain and posterior thigh pain in the early stage after percutaneous endoscopic lumbar discectomy (PELD). Methods: A total of 88 patients who underwent PELD from December 2017 to June 2018 in the First Affiliated Hospital of Anhui Medical University were enrolled in this study. PELD was performed by posterior-lateral approach and the interlaminar approach in 44 cases, respectively. During the 3-month of follow-up post PELD, the number of cases who suffered low back pain and posterior thigh pain, complications and postoperative treatments were all followed and evaluated. Results: All the 88 cases underwent PELD successfully. Twelve cases (27.3%) suffered low back pain after PELD by posterior-lateral approach totally, 4 patients (9.1%) were new cases and the low back pain aggravated after PELD in the other 8 cases (18.2%). The posterior thigh pain occurred in 9 cases (20.4%) after PELD in posterior-lateral approach group, of them, 5 patients (11.4%) were new cases and it was aggravated in 4(9.1%) cases after the surgery. As for the low back pain after PELD performed by the interlaminar approach, 7(15.9%) cases suffered low back pain and 1 case (2.3%) occurred after surgery. The posterior thigh pain happened in 5 cases (11.4%) after PELD in the interlaminar approach group, 2 cases (4.6%) were new cases and the pain was aggravated in 3 cases (6.8%) after surgery. According the classification of MacNab, 42 of 88 cases were classified excellent, 25 cases good, 17 cases fair and 4 cases poor after PELD. Totally 18 cases were classified into fair and poor because of the low back pain or the posterior thigh pain during the follow-up. Furthermore, none of 88 cases had infection or nerve root injury after surgery. All cases suffering the low back pain or the posterior thigh pain treated conservatively and no one needed surgery again. Conclusions: The pain in low back or posterior thigh may be one of the complications after PELD, and it can be treated conservatively. Incidence of the low back pain or the posterior thigh pain after PELD with posterior-lateral approach is higher than that in patients with interlaminar approach, and it may affect the efficacy of PELD.
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