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Seiya Watanabe
Department Kawasaki Medical School Kawasaki Medical School, Department of Bone and Joint Surgery, Position Instructor |
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| Article types | 原著 |
| Language | English |
| Peer review | Peer reviewed |
| Title | Investigation of long lateral mass screw insertion torque. |
| Journal | Formal name：Surgical neurology international Abbreviation：Surg Neurol Int ISSN code：22295097/21527806 |
| Domestic / Foregin | Foregin |
| Volume, Issue, Page | 15,pp.111 |
| Author and coauthor | Seiya Watanabe, Kazuo Nakanishi, Yoshihisa Sugimoto, Kazuya Uchino, Hideaki Iba |
| Authorship | Lead author |
| Publication date | 2024/05/29 |
| Summary | BACKGROUND:Here, we assessed a new trajectory and insertion torque for the placement of a long lateral mass screw (LLMS) that offers stronger posterior fixation versus a shorter lateral mass screw (LMS) in the posterior cervical spine. We report a short technical note of the insertion torque of LLMS.METHODS:The insertion trajectory/torque was evaluated in 30 patients (10 males and 20 females) undergoing posterior cervical LLMS fusions (2021-2023). Patients averaged 65 years of age. Pathology included eight cervical spine injuries, ten cord injuries, four dislocations/fractures, and eight other entities. Variables studied included the length of the LLMS inserted from C3-7, screw deviation rates, insertion torque, and adverse events.RESULTS:A total of 146 screws were inserted: 11 pedicle screws (PSs) and 135 LLMS. The average insertion torque was 105.9 cNm for PS and 64.9 cNm for LLMS. As the screw lengthened by 1 mm, the insertion torque increased by approximately 4.4 cNm.CONCLUSION:Here, we documented that the insertion torque of LLMS was 66.1 cNm, greater than the 51.0 cNm for LMS, which should provide stronger posterior cervical fixation. |
| DOI | 10.25259/SNI_147_2024 |
| PMID | 38628514 |