{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T01:32:05Z","timestamp":1773797525597,"version":"3.50.1"},"reference-count":10,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\nBackground: <\/jats:title>\nEstablishing the proper diagnosis and rendering appropriate treatment of spinal primary bone tumors (SPBT) can result in definitive cures. Notably, malignant, or benign SPBT (i.e., with aggressive local behavior) generally require en bloc<\/jats:italic> resection. Osteotomies of the vertebral body in more than 1 plane may avoid critical structures, preserve nerve functions, and reduce the volume of healthy bone resected. Here, our objective was to report how we planned and performed navigated multiplanar osteotomies for en bloc<\/jats:italic> resection of 14 SPBT.<\/jats:p>\n<\/jats:sec>\n\nMethods: <\/jats:title>\nWe performed a retrospective analysis of 14 patients with malignant or locally aggressive benign SPBT operated on consecutively between 2014 and 2019 utilizing preoperative 3D planning\/navigation. Tumors were resected in an en bloc<\/jats:italic> fashion utilizing multiplanar osteotomies. Patients were followed for a minimum of 12 postoperative months.<\/jats:p>\n<\/jats:sec>\n\nResults: <\/jats:title>\nDiagnoses included three benign but locally aggressive bone tumors (i.e., all osteoblastomas) and 11 primary sarcomas (i.e., six chordomas and five chondrosarcomas). Eleven tumors involved the sacrum and the other three, the thoracic spine. In 12 patients, the en bloc<\/jats:italic> margins were classified as marginal (<1 cm), and in two patients, as wide (>1 cm). Intraoperative navigation facilitated the performance of 40 osteotomies in 14 patients (median = 2.9, range = 2\u20136).<\/jats:p>\n<\/jats:sec>\n\nConclusion: <\/jats:title>\nNavigated multiplanar osteotomies increased the precision and safety of en bloc<\/jats:italic> resections for 14 primary spinal bone tumors SPBT that included 11 malignant and three benign\/locally aggressive lesions.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_1232_2021","type":"journal-article","created":{"date-parts":[[2022,2,18]],"date-time":"2022-02-18T06:21:47Z","timestamp":1645165307000},"page":"58","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Navigated multiplanar osteotomies for spinal primary bone tumors"],"prefix":"10.25259","volume":"13","author":[{"given":"Federico","family":"Landriel","sequence":"first","affiliation":[{"name":"Department of Neurosurgical, Spine Unit, Hospital Italiano de Buenos Aires,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Ignacio","family":"Albergo","sequence":"additional","affiliation":[{"name":"Department of Orthopedic, Oncology Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Germ\u00e1n","family":"Farfalli","sequence":"additional","affiliation":[{"name":"Department of Orthopedic, Oncology Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudio","family":"Yampolsky","sequence":"additional","affiliation":[{"name":"Department of Neurosurgical, Spine Unit, Hospital Italiano de Buenos Aires,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel","family":"Ayerza","sequence":"additional","affiliation":[{"name":"Department of Orthopedic, Oncology Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luis","family":"Aponte-Tinao","sequence":"additional","affiliation":[{"name":"Department of Orthopedic, Oncology Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Department of Orthopedic, Spine Surgery Division, Instituto do C\u00e2ncer do Estado de S\u00e3o Paulo, Sao Paulo, Brazil,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lucas","family":"Ritacco","sequence":"additional","affiliation":[{"name":"Department of Health Informatics, Virtual Planning and Navigation Unit, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Santiago","family":"Hem","sequence":"additional","affiliation":[{"name":"Department of Neurosurgical, Spine Unit, Hospital Italiano de Buenos Aires,"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2022,2,18]]},"reference":[{"key":"10.25259\/SNI_1232_2021\/ref-1","doi-asserted-by":"crossref","first-page":"125162","DOI":"10.1155\/2010\/125162","article-title":"Computer-assisted resection and reconstruction of pelvic tumor sarcoma","volume":"2010","author":"Docquier","year":"2010","journal-title":"Sarcoma"},{"key":"10.25259\/SNI_1232_2021\/ref-2","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1097\/00003086-198011000-00013","article-title":"A system for the surgical staging of musculoskeletal sarcoma","volume":"153","author":"Enneking","year":"1980","journal-title":"Clin Orthop Relat Res"},{"key":"10.25259\/SNI_1232_2021\/ref-3","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1007\/s11864-009-0102-8","article-title":"Multidisciplinary management of primary tumors of the vertebral column","volume":"10","author":"Hsu","year":"2009","journal-title":"Curr Treat Options Oncol"},{"key":"10.25259\/SNI_1232_2021\/ref-4","doi-asserted-by":"crossref","first-page":"360","DOI":"10.4184\/asj.2016.10.2.360","article-title":"Utility of a computed tomography-based navigation system (O-Arm) for en bloc partial vertebrectomy for lung cancer adjacent to the thoracic spine: Technical case report","volume":"10","author":"Kobayashi","year":"2016","journal-title":"Asian Spine J"},{"key":"10.25259\/SNI_1232_2021\/ref-5","doi-asserted-by":"crossref","first-page":"631","DOI":"10.3928\/01477447-20130724-10","article-title":"Computer-assisted navigation in orthopedic surgery","volume":"36","author":"Mavrogenis","year":"2013","journal-title":"Orthopedics"},{"key":"10.25259\/SNI_1232_2021\/ref-6","doi-asserted-by":"crossref","first-page":"E15","DOI":"10.3171\/2016.5.FOCUS16136","article-title":"Resection of spinal column tumors utilizing image-guided navigation: A multicenter analysis","volume":"41","author":"Nasser","year":"2016","journal-title":"Neurosurg Focus"},{"key":"10.25259\/SNI_1232_2021\/ref-7","doi-asserted-by":"crossref","first-page":"e1542","DOI":"10.1016\/j.wneu.2018.11.098","article-title":"Partial vertebrectomies without instrumented stabilization during en bloc resection of primary bronchogenic carcinomas invading the spine: Feasibility study and results on spine balance","volume":"122","author":"Ng","year":"2019","journal-title":"World Neurosurg"},{"key":"10.25259\/SNI_1232_2021\/ref-8","doi-asserted-by":"crossref","first-page":"e942","DOI":"10.3928\/01477447-20130624-27","article-title":"Accuracy of 3-D planning and navigation in bone tumor resection","volume":"36","author":"Ritacco","year":"2013","journal-title":"Orthopedics"},{"key":"10.25259\/SNI_1232_2021\/ref-9","first-page":"1162","article-title":"Bone tumor resection: Analysis about 3D preoperative planning and navigation method using a virtual specimen","volume":"192","author":"Ritacco","year":"2013","journal-title":"Stud Health Technol Inform"},{"key":"10.25259\/SNI_1232_2021\/ref-10","doi-asserted-by":"crossref","first-page":"2533","DOI":"10.1007\/s11999-008-0374-5","article-title":"Image fusion for computer-assisted bone tumor surgery","volume":"466","author":"Wong","year":"2008","journal-title":"Clin Orthop Relat Res"}],"container-title":["Surgical Neurology 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