{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T05:29:06Z","timestamp":1786512546949,"version":"build-2736575974"},"reference-count":29,"publisher":"The Korean Spinal Neurosurgery Society","issue":"3","license":[{"start":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T00:00:00Z","timestamp":1785456000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["RS-2024-00352326"],"award-info":[{"award-number":["RS-2024-00352326"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100014188","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["e-neurospine.org"],"crossmark-restriction":true},"short-container-title":["NS"],"published-print":{"date-parts":[[2026,7,31]]},"abstract":"<jats:p>Objective: To investigate feasibility and effectiveness of minimally invasive scoliosis surgery (MISS) via posterior approach in patients with adolescent idiopathic scoliosis (AIS) presenting with very severe curve exceeding 80\u00b0.Methods: A total of 257 flexible AIS patients who underwent deformity correction using posterior MISS were retrospectively categorized into 3 groups based on the curve magnitude: moderate (M group, main Cobb angle &lt;60\u00b0, n=142), severe (S group, 60\u00b0\u201380\u00b0, n=91), and very severe (VS group, \u226580\u00b0, n=24). Radiological parameters, perioperative outcomes, and complication rates were compared among the 3 groups.Results: The VS group required significantly longer operative times (p&lt;0.001), more fused segments (p&lt;0.001), and a greater number of rib resections during thoracoplasty (p=0.032) compared to the other groups. Despite these surgical demands, there were no statistical differences in the correction rate (p=0.954) and last follow-up thoracic kyphosis (p=0.830) among the 3 groups. Regarding complications, while the overall complication rate showed no statistical difference, the VS group required significantly more invasive management for pleural effusions (p=0.012).Conclusion: Posterior MISS demonstrated acceptable radiological and perioperative outcomes even in flexible AIS with Cobb angles \u226580\u00b0. These findings suggest the posterior MISS can be a feasible surgical option for selected very severe AIS patients with sufficient flexibility.<\/jats:p>","DOI":"10.14245\/ns.26520810.0405","type":"journal-article","created":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:15:42Z","timestamp":1785402942000},"page":"567-576","update-policy":"https:\/\/doi.org\/10.14245\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Feasibility of Minimally Invasive Scoliosis Surgery in Adolescent Idiopathic Scoliosis Exceeding 80\u00b0 of Curve Magnitude"],"prefix":"10.14245","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8162-9585","authenticated-orcid":true,"given":"Hong Jin","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Korea University Guro Hospital, Seoul, 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