{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T12:29:24Z","timestamp":1781612964262,"version":"3.54.5"},"reference-count":32,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82572855"],"award-info":[{"award-number":["82572855"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Precise and reproducible control of wedge resection remains challenging in osteotomy correction for ankylosing spondylitis\u2013related rigid kyphosis, and reports of robotic stereotactic execution beyond pedicle screw placement are limited. This technical note describes the operative workflow of robot\u2010assisted stereotactic osteotomy (RASO), focusing on quantitative wedge planning and stereotactic execution feasibility.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>The RASO technique and operative workflow are described. Patients with type II ankylosing spondylitis\u2010related thoracolumbar deformity who underwent single\u2010level three\u2010column RASO between May and November 2023 were analyzed. Preoperative planning was performed using Surgimap wedge simulation with ratio\u2010of\u2010closure\u2013based prediction, and stereotactic osteotomy trajectories were executed using the Mazor X Stealth Edition system. Perioperative parameters and immediate postoperative radiographic findings were descriptively assessed to evaluate the feasibility and reliability of the proposed operative workflow.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>This technique was successfully implemented in 15 patients. The mean operative duration was 304.2\u2009\u00b1\u200951.4\u2009min, and the mean intraoperative blood loss was 486.7\u2009\u00b1\u2009229.5\u2009mL. Planning\u2013execution concordance demonstrated acceptable agreement, with a maximal ratio\u2010of\u2010closure\u2013related deviation of \u2264\u20095.18\u00b0 and a mean difference of 0.2\u00b0 between planned and achieved osteotomy Cobb angles. The mean thoracolumbar kyphosis (TLK) improved from 50.2\u00b0 to 13.2\u00b0, the chin\u2010brow vertical angle (CBVA) improved from 36.7\u00b0 to 15.1\u00b0, the PT improved from 35.6\u00b0 to 26.6\u00b0, and the sagittal vertical axis (SVA) improved from 207.6 to 93.7\u2009mm. Three intraoperative durotomies occurred during the decompression phase; one patient developed delayed cerebrospinal fluid leakage. No neurological deficits, hardware failure, or mortality were observed. All patients achieved osseous fusion and demonstrated improvements in health\u2010related quality of life measures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This technical note demonstrates the technical feasibility and workflow reliability of robot\u2010assisted stereotactic osteotomy for rigid ankylosing spondylitis\u2013related thoracolumbar kyphotic deformity. Quantitative wedge planning can be reproducibly translated into robotic stereotactic intraoperative execution. Further studies are required to define the broader clinical role and potential applications of this technique.<\/jats:p>\n                    <jats:p>\n                      <jats:bold>Trial Registration:<\/jats:bold>\n                      Chinese Clinical Trial Registry: 2400090375.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/os.70282","type":"journal-article","created":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T14:56:35Z","timestamp":1773845795000},"page":"874-884","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Robot\u2010Assisted Stereotactic Osteotomy Technique for Correcting Thoracolumbar Kyphotic Deformity in Ankylosing Spondylitis: A Technical Note"],"prefix":"10.1111","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9140-3881","authenticated-orcid":false,"given":"Yi","family":"Huang","sequence":"first","affiliation":[{"name":"Nankai University School of Medicine Nankai University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yiming","family":"Fan","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Han","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ze","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6651-423X","authenticated-orcid":false,"given":"Zhihao","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianhao","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenhao","family":"Hu","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuesong","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoquan","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, the First Medical Center of PLA General Hospital  Beijing 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