{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T18:16:02Z","timestamp":1793297762235,"version":"4.5.0"},"reference-count":43,"publisher":"The Korean Spinal Neurosurgery Society","issue":"4","license":[{"start":{"date-parts":[[2023,12,31]],"date-time":"2023-12-31T00:00:00Z","timestamp":1703980800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82102599"],"award-info":[{"award-number":["82102599"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Medicine and health science and technology plan in Zhejiang province","award":["2020RC058"],"award-info":[{"award-number":["2020RC058"]}]}],"content-domain":{"domain":["e-neurospine.org"],"crossmark-restriction":true},"short-container-title":["Neurospine"],"published-print":{"date-parts":[[2023,12,31]]},"abstract":"<jats:p>Objective: To introduce a technique of laminotomy using a common trephine to enlarge the interlaminar space at L4\/5 segment for interlaminar endoscopic lumbar discectomy (IELD) and report the anatomical basis of this procedure, technical details, as well as primary clinical outcomes of a consecutive patient cohort with L4\/5 lumbar disc herniation (LDH).Methods: On anteroposterior fluoroscopy, the intersection of the medial edge of the inferior articular process and the inferior endplate of L4 vertebra was taken as the target. Using a common trephine, laminotomy was performed to remove a big portion of the posterior wall of the canal under the guidance of endoscopy. From June 2018 to December 2021, the consecutive patients who underwent L4\/5 IELD were prospectively studied. Clinical outcomes were assessed at the day before surgery, 1 day, 1 month, 3 months, 12 months after surgery, and the last follow-up. Numerical Rating Scale, Roland-Morris Disability Questionnaire (RMDQ), and MacNab criteria were used to evaluate back and leg pain, the quality of life, and clinical efficacy, respectively.Results: There were 64 men and 44 women, with an age of 50.3 \u00b1 14.9 years. The operating time was 74.54 \u00b1 17.42 minutes. The mean follow-up time was 32.7 \u00b1 18.6 months (range, 12\u201364 months). The complications of IELD included numbness, neck pain, and recurrence. Both leg pain (6.2 \u00b1 1.9 vs. 1.8 \u00b1 0.8, p &lt; 0.001) and back pain (3.1 \u00b1 2.3 vs. 1.7 \u00b1 0.9, p &lt; 0.001) quickly improved after this procedure and maintained (1.1 \u00b1 1.5, 1.1 \u00b1 1.3) at final follow-up. Physical disability due to back pain, as assessed using RMDQ, was improved remarkably after surgery (15.0 \u00b1 5.8 vs. 2.9 \u00b1 4.1, p &lt; 0.001). In addition, MacNab outcome grade was evaluated as good-to-excellent in 96 cases (88.9%).Conclusion: A convenient technique of laminotomy using a common trephine was proposed for the L4\/5 IELD. It can efficiently enlarge the interlaminar entry to perform endoscopic discectomy. This procedure is particularly suitable for treating LDH with concomitant lumbar spinal stenosis and migrated herniated disc.<\/jats:p>","DOI":"10.14245\/ns.2346572.286","type":"journal-article","created":{"date-parts":[[2023,12,27]],"date-time":"2023-12-27T23:32:11Z","timestamp":1703719931000},"page":"1513-1523","update-policy":"https:\/\/doi.org\/10.14245\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["A Modified Laminotomy for Interlaminar Endoscopic Lumbar Discectomy: Technical Report and Preliminary Results"],"prefix":"10.14245","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1995-2952","authenticated-orcid":true,"given":"Zhiyun","family":"Feng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-7248-792X","authenticated-orcid":true,"given":"Yuxu","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7033-9286","authenticated-orcid":true,"given":"Honghao","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-8756-7921","authenticated-orcid":true,"given":"Tae Gyong","family":"Jon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-7375-9277","authenticated-orcid":true,"given":"Ying","family":"Yuan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-1260-4682","authenticated-orcid":true,"given":"Zhong","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6580-809X","authenticated-orcid":true,"given":"Yue","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"5355","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wneu.2018.02.156"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijsu.2016.05.061"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.14245\/ns.2245042.521"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.3171\/2015.10.focus15484"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-013-3161-2"},{"key":"ref6","first-page":"41","volume-title":"Transforaminal endoscopic decompression for radiculopathy secondary to intracanal noncontained lumbar disc herniations: outcome and technique","author":"Tsou","year":"2002"},{"key":"ref7","first-page":"37","volume-title":"Posterolateral percutaneous suction-excision of herniated lumbar intervertebral discs. 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