• Sang Soo Eun, Sourabh Chachan, and Sang Ho Lee.
• Department of Orthopaedics, Wooridul Spine Hospital, Gangnum-gu, Seoul, Korea. Electronic address: erupt0123@naver.com.
• World Neurosurg. 2018 Oct 1; 118: 188-192.

BackgroundInterlaminar percutaneous endoscopic lumbar discectomy (PELD) is a minimally invasive technique to treat soft disc herniation. However, the currently used single working channel does not allow for safe nerve root retraction. This study aims to describe the rotate and retract technique for safe nerve root retraction during L5-S1 interlaminar PELD.MethodsA total of 17 patients who underwent interlaminar PELD with the rotate and retract technique between November 2016 and August 2017 were retrospectively evaluated. Both pre- and postoperative visual analog scale (VAS) scores (back and leg) and Oswestry Disability Index (ODI) scores were used for clinical assessment.ResultsThe mean preoperative VAS scores for back and leg pain were 3.84 ± 1.15 (range, 2-6) and 8.7 ± 0.2 (range, 8-10), respectively. The mean preoperative ODI score was 64.2 ± 13.2 (range, 48-90). The mean VAS scores for back and leg pain decreased to 1.24 ± 1.34 (range, 0-6) and 1.15 ± 0.65 (range, 0-4), respectively, at the last follow-up (P < 0.001). The mean ODI score also improved to 13.2 ± 5.1 (range, 9-29) at the last follow-up (P < 0.001).ConclusionsThe rotate and retract technique for interlaminar PELD is an effective maneuver for the treatment of L5-S1 disc herniations in selected patients if performed by experienced surgeons.Copyright © 2018 Elsevier Inc. All rights reserved.

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