{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T15:57:53Z","timestamp":1780934273359,"version":"3.54.1"},"reference-count":28,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T00:00:00Z","timestamp":1765411200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T00:00:00Z","timestamp":1765411200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Global Spine Journal"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:sec>\n                    <jats:title>Study Design<\/jats:title>\n                    <jats:p>Retrospective cohort study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To evaluate the mid-term clinical effectiveness, radiographic fusion rates, and safety profile of unilateral biportal endoscopic fusion-extension surgery (UBE-FES) in patients with symptomatic adjacent segment disease (ASD) after prior lumbar fusion.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We reviewed patients treated with UBE-FES between March 2020 and March 2023, each with \u226524\u00a0months of follow-up. Inclusion required new radicular or back pain from adjacent-level stenosis or Grade I\u2013II spondylolisthesis. Clinical outcome measures were collected preoperatively and at 3, 6, 12, and 24\u00a0months. Operative time, blood loss, hospital stay, and complications were recorded. Fusion status was assessed on 12-month CT (Bridwell grades).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Mean operative time was 176 \u00b1 22\u00a0min, blood loss was 185 \u00b1 33\u00a0mL per level, and hospital stay was 6 \u00b1 2\u00a0days. At 24\u00a0months, VAS-Back fell from 6.8 \u00b1 0.5 to 0.1 \u00b1 0.3 and VAS-Leg from 6.6 \u00b1 0.6 to 0.1 \u00b1 0.3 (both\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). ODI improved from 31.6 \u00b1 5.0% to 3.5 \u00b1 1.2% (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). SF-36 PF increased from 16.1 \u00b1 4.4 to 68.5 \u00b1 18.2 and BP from 26.9 \u00b1 6.4 to 72.3 \u00b1 19.5 (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). Fusion was achieved in 96.9%. Complications included one incidental durotomy (3.1%) and two asymptomatic cage subsidence events (6.3%); no infections or new neurologic deficits occurred.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>UBE-FES provides significant pain relief, functional improvement, and high fusion rates with minimal morbidity in ASD patients. These findings support UBE-FES as a viable alternative to open revision.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/21925682251406598","type":"journal-article","created":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T18:38:28Z","timestamp":1765478308000},"page":"2356-2366","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Patient-Reported and Radiographic Outcomes at Two Years Following Unilateral Biportal Endoscopic Fusion Extension for Adjacent Segment Disease: A Retrospective Cohort Study"],"prefix":"10.1177","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4249-3822","authenticated-orcid":false,"given":"Ji Soo","family":"Ha","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7968-6743","authenticated-orcid":false,"given":"Jae-Koo","family":"Lee","sequence":"additional","affiliation":[{"name":"Seoul National University Bundang Hospital, Seoul National University College of Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Piyush","family":"Gadegone","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rajendra","family":"Sakhrekar","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3008-9531","authenticated-orcid":false,"given":"Chang-Wook","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0961-1807","authenticated-orcid":false,"given":"Do-Hyoung","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hee-Don","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Spine Center, Yonsei Okay Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,12,11]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.brs.0000137069.88904.03"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00701-023-05629-z"},{"key":"e_1_3_6_4_2","doi-asserted-by":"publisher","DOI":"10.21037\/jss-23-16"},{"key":"e_1_3_6_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-981-16-8201-8_14"},{"key":"e_1_3_6_6_2","doi-asserted-by":"publisher","DOI":"10.3171\/2019.1.FOCUS18695"},{"key":"e_1_3_6_7_2","doi-asserted-by":"publisher","DOI":"10.1080\/17434440.2019.1610388"},{"key":"e_1_3_6_8_2","doi-asserted-by":"publisher","DOI":"10.3389\/fsurg.2022.911914"},{"key":"e_1_3_6_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-031-14736-4_23"},{"key":"e_1_3_6_10_2","doi-asserted-by":"publisher","DOI":"10.1097\/00002517-199212000-00002"},{"key":"e_1_3_6_11_2","doi-asserted-by":"publisher","DOI":"10.13107\/jocr.2023.v13.i12.4122"},{"key":"e_1_3_6_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-34126-7_39"},{"key":"e_1_3_6_13_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199812000-00002"},{"key":"e_1_3_6_14_2","doi-asserted-by":"publisher","DOI":"10.3928\/0147-7447-20021001-16"},{"key":"e_1_3_6_15_2","doi-asserted-by":"publisher","DOI":"10.3928\/01477447-20170621-02"},{"key":"e_1_3_6_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/21925682221148685"},{"issue":"3","key":"e_1_3_6_17_2","first-page":"132","article-title":"Occupational hazards facing orthopedic surgeons","volume":"41","author":"Lester JD","year":"2012","unstructured":"Lester JD, Hsu S, Ahmad CS. 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