Anatomical considerations of safe drilling corridor upper sacral segment screw insertion.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31660021.
- Also identified by DOI 10.1016/j.jor.2019.04.010 and PMC identifier 6806658.
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Abstract
The upper segment of sacrum is an important for screw insertions of unstable lumbosacral spine. Measurements of the S1-S2 as sacral wings, pedicles, sacral foraminas and sacral canal were taken from 87 sacrums. The mean depths of S1 pedicle and sacral wing were estimated as 25.8 ± 2.3 mm and 50.1 ± 1.7 mm, respectively. Angles screw trajectory of sacral pedicle anteromedial and sacral wing were measured as 29.6 ± 0.9° and 29.7 ± 2.1°, respectively. To avoid injury to the vascular structures anteriorly and nerve roots medially, depth and angle of screw trajectory is important for the entrance off pedicular screw placement to the S1.
Anatomy
- sacrum-coccyx