Effects of pelvic fixation strategies and multi-rod constructs on biomechanics of the proximal junction in long thoracolumbar posterior instrumented fusions: a finite-element analysis
Dual iliac screws with 4 rods across the lumbosacral junction and extending to the thoracolumbar junction demonstrated the lowest T10-S1 ROM, the lowest adjacent segment disc (T9-T10) ROM, intradiscal pressures, and annular stresses, and the lowest UIV stresses, albeit with the highest UIV + 1 stresses. Additional studies are needed to confirm whether these biomechanical findings dictate clinical outcomes and effect rates of proximal junctional kyphosis and failure.
Authors
- Niloufar Shekouhi (ORCID: https://orcid.org/0000-0003-3080-5056)
- Alekos A. Theologis (ORCID: https://orcid.org/0000-0001-6170-2813)
- Christopher Pearson Ames (ORCID: https://orcid.org/0000-0003-2618-3098)
- Muzammil Mumtaz (ORCID: https://orcid.org/0000-0003-2394-9238)
- Vedat Deviren
- Sudharshan Tripathi (ORCID: https://orcid.org/0009-0003-6141-5816)
- Vijay K. Goel (ORCID: https://orcid.org/0000-0002-9175-5366)
- Andrew P. Collins (ORCID: https://orcid.org/0000-0001-7159-1782)
- Allan Clark (ORCID: https://orcid.org/0000-0003-2965-8941)
- Karthika Varier
Institutions
- University of California, San Francisco (US)
- University of Washington (US)
- Neurological Surgery (US)
- University of Toledo (US)
Publication Details
- Journal
- Spine Deformity
- Published
- 2024-08-20
- DOI
- https://doi.org/10.1007/s43390-024-00932-w
- Citations
- 4
- Primary Topic
- Pelvic and Acetabular Injuries
- Type
- article
- Field-Weighted Citation Impact
- 2.29