{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:21:46Z","timestamp":1760145706746,"version":"build-2065373602"},"reference-count":23,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2024,8,29]],"date-time":"2024-08-29T00:00:00Z","timestamp":1724889600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Brain Sciences"],"abstract":"<jats:p>(1) Background: Our team has previously introduced the Single-Step Pedicle Screw System (SSPSS), which eliminates the need for K-wires, as a safe and effective method for percutaneous minimally invasive spine (MIS) pedicle screw placement. Despite this, there are ongoing concerns about the reliability and accuracy of screw placement in MIS procedures without traditional tools like K-wires and Jamshidi needles. To address these concerns, we evaluated the accuracy of the SSPSS workflow by comparing the planned intraoperative screw trajectories with the final screw positions. Traditionally, screw placement accuracy has been assessed by grading the final screw position using postoperative CT scans. (2) Methods: We conducted a retrospective review of patients who underwent lumbar interbody fusion, using intraoperative 3D navigation for screw placement. The planned screw trajectories were saved in the navigation system during each procedure, and postoperative CT scans were used to evaluate the implanted screws. Accuracy was assessed by comparing the Gertzbein and Robbins classification scores of the planned trajectories and the final screw positions. Accuracy was defined as a final screw position matching the classification of the planned trajectory. (3) Results: Out of 206 screws, 196 (95%) were accurately placed, with no recorded complications. (4) Conclusions: The SSPSS workflow, even without K-wires and other traditional instruments, facilitates accurate and reliable pedicle screw placement.<\/jats:p>","DOI":"10.3390\/brainsci14090873","type":"journal-article","created":{"date-parts":[[2024,8,29]],"date-time":"2024-08-29T03:40:39Z","timestamp":1724902839000},"page":"873","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["High Accuracy of Three-Dimensional Navigated Kirschner-Wire-Less Single-Step Pedicle Screw System (SSPSS) in Lumbar Fusions: Comparison of Intraoperatively Planned versus Final Screw Position"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7324-9101","authenticated-orcid":false,"given":"Mateusz","family":"Bielecki","sequence":"first","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Blake I.","family":"Boadi","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yizhou","family":"Xie","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3646-7713","authenticated-orcid":false,"given":"Chibuikem A.","family":"Ikwuegbuenyi","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0136-4239","authenticated-orcid":false,"given":"Minaam","family":"Farooq","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jessica","family":"Berger","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3530-0188","authenticated-orcid":false,"given":"Alan","family":"Hern\u00e1ndez-Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ibrahim","family":"Hussain","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roger","family":"H\u00e4rtl","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2014Department of Neurosurgery, NewYork-Presbyterian Och Spine Hospital, New York, NY 10034, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"402","DOI":"10.1007\/BF01834068","article-title":"Accuracy of Pedicle Screw Insertion: A Prospective CT Study in 30 Low Back Patients","volume":"6","author":"Laine","year":"1997","journal-title":"Eur. 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Res."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Lian, X., Navarro-Ramirez, R., Berlin, C., Jada, A., Moriguchi, Y., Zhang, Q., and H\u00e4rtl, R. (2016). Total 3D Airo\u00ae Navigation for Minimally Invasive Transforaminal Lumbar Interbody Fusion. Biomed. Res. Int., 2016.","DOI":"10.1155\/2016\/5027340"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1098","DOI":"10.1177\/2192568220976393","article-title":"Novel MIS 3D NAV Single Step Pedicle Screw System (SSPSS): Workflow, Accuracy and Initial Clinical Experience","volume":"12","author":"Schmidt","year":"2022","journal-title":"Global Spine J."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"S520","DOI":"10.4103\/2152-7806.148009","article-title":"K-Wire Fracture during Minimally Invasive Transforaminal Lumbar Interbody Fusion: Report of Six Cases and Recommendations for Avoidance and Management","volume":"5","author":"Scheer","year":"2014","journal-title":"Surg. Neurol. 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