{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T08:39:06Z","timestamp":1762504746530,"version":"build-2065373602"},"reference-count":9,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\n Background:<\/jats:title>\n \n Chordomas are rare malignant tumors of notochordal origin, with sacral chordomas being the most common.\n En bloc<\/jats:italic>\n resection with negative margins is the preferred treatment for long-term disease control. However, the technical complexity of\n en bloc<\/jats:italic>\n sacrectomy cannot be overstated. This case report highlights the use of a patient-specific 3D-printed cutting guide to assist in the precise\n en bloc<\/jats:italic>\n resection of a large sacral chordoma.\n <\/jats:p>\n <\/jats:sec>\n \n Case Description:<\/jats:title>\n \n A 51-year-old male with a history of refractory constipation and lower back pain was diagnosed with a large sacral chordoma. Preoperative planning included the creation of a patient-specific 3D-printed cutting guide used to make precise bony cuts while preserving critical structures. Complete\n en bloc<\/jats:italic>\n resection with negative margins was achieved. The patient recovered well postoperatively; follow-up imaging at 13 months showed no tumor recurrence. At 25 months, however, a small recurrence was noted in the right piriformis\/gluteal muscle.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n \n The use of a 3D-printed cutting guide is a novel technology that can be used to facilitate\n en bloc<\/jats:italic>\n resection of bony tumors. Use of the cutting guide simplified the technical difficulty involved with more traditional methods for sacrectomy.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.25259\/sni_658_2025","type":"journal-article","created":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T08:23:53Z","timestamp":1762503833000},"page":"462","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Precision in action: Using patient-specific cutting guides for\n en bloc<\/i>\n resection of large sacral chordomas \u2013 A case report"],"prefix":"10.25259","volume":"16","author":[{"given":"Oludotun","family":"Ogunsola","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, University of Michigan, Ann Arbor, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebele","family":"Ogunsola","sequence":"additional","affiliation":[{"name":"School of Medicine, Western Michigan University Homer Stryker MD School of Medicine, Kalamazoo, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph R.","family":"Linzey","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, University of Michigan, Ann Arbor, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Geoffrey W.","family":"Siegel","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, University of Michigan, Ann Arbor, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Park","sequence":"additional","affiliation":[{"name":"Semmes-Murphy Neurologic and Spine Clinic, Memphis, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2025,11,7]]},"reference":[{"key":"10.25259\/SNI_658_2025\/ref-1","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1038\/sc.2009.95","article-title":"Prognostic factors of sacral chordoma after surgical therapy: A study of 36 patients","volume":"48","author":"Chen","year":"2010","journal-title":"Spinal Cord"},{"key":"10.25259\/SNI_658_2025\/ref-2","doi-asserted-by":"crossref","first-page":"F1000","DOI":"10.12688\/f1000research.22440.1","article-title":"Recent advances in understanding and managing chordomas: An update","volume":"9","author":"Connors","year":"2020","journal-title":"F1000Res"},{"key":"10.25259\/SNI_658_2025\/ref-3","first-page":"100090","article-title":"Partial sacrectomy with patient-specific osteotomy guides","volume":"8","author":"Farshad","year":"2021","journal-title":"N Am Spine Soc J"},{"key":"10.25259\/SNI_658_2025\/ref-4","doi-asserted-by":"crossref","DOI":"10.1007\/s00586-025-08840-x","article-title":"Surgical outcomes in oncological sacrectomy: A detailed analysis of surgical site infections (SSI)","volume-title":"Eur Spine 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years","volume":"96","author":"Xia","year":"2025","journal-title":"Neurosurgery"},{"key":"10.25259\/SNI_658_2025\/ref-8","doi-asserted-by":"crossref","first-page":"203","DOI":"10.3389\/fonc.2016.00203","article-title":"Incidence, treatment, and survival patterns for sacral chordoma in the United States 1974-2011","volume":"6","author":"Yu","year":"2016","journal-title":"Front Oncol"},{"key":"10.25259\/SNI_658_2025\/ref-9","doi-asserted-by":"crossref","first-page":"740","DOI":"10.1177\/21925682211011444","article-title":"Outcomes of surgery for sacral chordoma and impact of complications: A report of 50 consecutive patients with long-term follow-up","volume":"11","author":"Zuckerman","year":"2021","journal-title":"Global Spine J"}],"container-title":["Surgical Neurology 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