دورية أكاديمية
Pelvic parameters directly influence ideal S2 alar-iliac (S2AI) screw trajectory
| العنوان: | Pelvic parameters directly influence ideal S2 alar-iliac (S2AI) screw trajectory |
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| المؤلفون: | Bradley J. Vivace, Joseph L. Laratta, Jeffrey L. Gum, Jamal N. Shillingford, John R. Dimar II, Steven D. Glassman, Lee A. Tan, Nana O. Sarpong, James D. Lin, Ronald A. Lehman, Yongjung J. Kim, Lawrence G. Lenke |
| المصدر: | North American Spine Society Journal, Vol 2, Iss , Pp 100014- (2020) |
| بيانات النشر: | Elsevier, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Orthopedic surgery LCC:Neurology. Diseases of the nervous system |
| مصطلحات موضوعية: | S2ai, Free-hand, S2-alar-iliac, Sacropelvic fixation, Pelvis, Sacral, Orthopedic surgery, RD701-811, Neurology. Diseases of the nervous system, RC346-429 |
| الوصف: | Background: The utilization of the S2 Alar-Iliac (S2AI) screw provides an optimal method of spinopelvic fixation. The free-hand placement of these screws obviates the use of intra-operative fluoroscopy and relies heavily on sacropelvic anatomy; variations of this anatomy could alter the ideal screw trajectory. The S2AI corridor is near several neurovascular structures, thus an accurate trajectory is critical. The reported angles of trajectory vary within the literature and a paucity of data exists on how patient morphometry influences ideal screw trajectory. We sought to examine the relationship between ideal screw trajectory and pelvic parameters. Methods: The records of 99 consecutive patients with degenerative thoracolumbar pathology were reviewed and pelvic parameters including sacral slope, pelvic tilt, and pelvic incidence were measured with preoperative standing radiographs. Using 3-dimensional computed tomography (CT) reconstructions, an ideal S2AI trajectory was defined and anteroposterior (horizontal) and cephalocaudal (sagittal) angles were recorded. Results: Pelvic tilt was found to have a moderate inverse correlation with cephalocaudal screw trajectory (r=-0.467, p-value=0.006). Pelvic incidence and sacral slope had weaker correlations with cephalocaudal screw angle. In subgroup analysis, patients with high pelvic tilt (>20°) had a significantly lower cephalocaudal screw trajectory (24.9 ± 3.7° versus 29.8 ± 2.8°, p-value= |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2666-5484 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2666548420300147; https://doaj.org/toc/2666-5484 |
| DOI: | 10.1016/j.xnsj.2020.100014 |
| URL الوصول: | https://doaj.org/article/2944bacba9824a22ab9fd071fa0f5d28 |
| رقم الأكسشن: | edsdoj.2944bacba9824a22ab9fd071fa0f5d28 |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 26665484 |
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| DOI: | 10.1016/j.xnsj.2020.100014 |