Biomechanical evaluation of In-Out-In pedicle screws for atlantoaxial posterior fixation in the presence of high-riding vertebral artery and narrow C2 pedicles: a finite element analysis
For patients with HRVA and narrow C2 pedicles, IOIPS offers superior stability along with relatively low and evenly distributed implant stress, suggesting it is a biomechanically viable fixation technique. However, its application should be reserved for carefully selected cases rather than adopted as a routine surgical strategy.
Authors
- Jing-Lai Xue
- Y J Chen (ORCID: https://orcid.org/0000-0001-8030-663X)
- Mingdi Chen
- Xuezhi Lin (ORCID: https://orcid.org/0000-0003-1362-515X)
- Feng Wei
- Hu Ruan (ORCID: https://orcid.org/0009-0009-9027-4403)
- Xin Chen (ORCID: https://orcid.org/0000-0003-3561-2691)
- Xiang-Ting Chen
- Huo-Huo Xue
- Zhiqiang Wang (ORCID: https://orcid.org/0000-0002-5839-743X)
- Wen He (ORCID: https://orcid.org/0000-0002-7177-4498)
- Wenjia Sun (ORCID: https://orcid.org/0000-0002-4802-1359)
- Zhili Zeng (ORCID: https://orcid.org/0000-0001-6794-7862)
- Zong-Ping Luo (ORCID: https://orcid.org/0009-0005-0423-7528)
- Xiong-Han Lian
Institutions
- Fujian University of Traditional Chinese Medicine (CN)
- Fuzhou Second Hospital (CN)
Publication Details
- Journal
- Journal of Orthopaedic Surgery and Research
- Published
- 2025-07-16
- DOI
- https://doi.org/10.1186/s13018-025-06095-2
- Primary Topic
- Spinal Fractures and Fixation Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Natural Science Foundation of Fujian Province
- Fujian University of Traditional Chinese Medicine