Endoscopic L5/S1 discectomy through interlaminar approach for the patient with the high iliac crest and migrated disc herniation.

Abstract

To explore the clinical efficacy of endoscopic L5/S1 discectomy through interlaminar approach for the patient with the high iliac crest and migrated disc herniation. A retrospective study of 31 patients with the high iliac crest and migrated disc herniation at the L5/S1 level was conducted in our hospital. All of the consented patients accepted endoscopic L5/S1 discectomy through interlaminar approach from January 2016 to January 2019. Preoperative, postoperative, and follow-up Visual Analogue Scale (VAS) and Oswestry Disability Index (ODI) were used to assess the pain and waist function of patients. The clinical efficacy was evaluated according to Macnab criteria. All the patients were followed up for 12-48 (29.68±9.64) months. The operation time was (79.16±22.43) min. The times of fluoroscopy were 2.71±0.78. The VAS of low back and leg pain was 7.09±0.94 before the surgery, 1.45±1.23 at 3 months after the surgery, and 1.27±0.92 at the last follow-up. The VAS after the surgery and at the last follow-up was significantly lower than that before the operation (P<0.05). The ODI was 56.03±6.64 before the surgery, 16.45±6.83 at 3 months after the surgery, and 13.03±4.96 at the last follow-up. The ODI was significantly lower after the surgery and at the last follow-up compared with that before the surgery (P<0.05). The Macnab score at the last follow-up was graded as excellent in 26 cases, good in 3 cases, fair in 2 cases, and the percentage of excellent and good were 93.5%. Part of the nucleus pulposus remained in 2 cases after the operation, one case underwent endoscopic revision and one case received conservative treatment; postoperative pain due to nerve root irritation was in one case and relieved by conservative treatment. The endoscopic L5/S1 discectomy through interlaminar approach is a relatively safe and effective treatment for the patient with the high iliac crest and migrated disc herniation, which can reduce X-ray examinations and complications, and achieve satisfactory clinical outcomes.