High riding vertebral artery

At the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose. The vertebral arteries VA are paired arteries, each arising from the respective subclavian artery and ascending in the neck to supply the posterior fossa and high riding vertebral artery lobes, as well as provide segmental vertebral and spinal column blood supply.

Either your web browser doesn't support Javascript or it is currently turned off. In the latter case, please turn on Javascript support in your web browser and reload this page. To arrive at the top five similar articles we use a word-weighted algorithm to compare words from the Title and Abstract of each citation. Eur Spine J , 31 5 , 06 Mar Cited by: 1 article PMID: Spine J , 22 8 , 01 May

High riding vertebral artery

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Spine J — Thus, for patients with KFS, narrow C2 pedicles and HRVAs, choosing an appropriate and effective screw trajectory is difficult but necessary for a successful surgery.

Federal government websites often end in. The site is secure. The data that support the findings of this study are available from the corresponding author, TK, upon reasonable request. High-riding vertebral artery HRVA and narrow C2 pedicles C2P pose a great risk of injuring the vessel during C2 pedicle or transarticular screw placement. Recent meta-analysis revealed a paucity of European studies regarding measurements and prevalence of these anatomical variants. Three hundred eighty-three consecutive cervical spine CT scans with potential screw insertion sites were analyzed independently by two trained observers. Kappa statistics for inter- and intraobserver reliability as well as for inter-software agreement were calculated.

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High riding vertebral artery

Rheumatoid arthritis RA might lead to atlantoaxial instability requiring transpedicular or transarticular fusion. High-riding vertebral artery HRVA puts patients at risk of injuring the vessel. However, to date, no relative risk RR has been calculated in order to quantitatively determine a true impact of RA as its risk factor. To the best of our knowledge, this is the first attempt to do so. RA patients were qualified into the exposed group group A , whereas non-RA subjects into the unexposed group group B. Risk of bias was explored by means of Newcastle-Ottawa Scale.

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The forest plot indicates mean distribution of RR across the studies along with the pooled effect Fig. For instance, Paramore et al. Published : 03 May At 6 weeks post-op she is ambulating with a walker with persistent lower greater than upper extremity weakness. Instant Anatomy. Reprints and permissions. Electronic supplementary material. However, it poses a grave risk of neurologic compromise in those with an absent, hypoplastic or stenotic contralateral artery 4. J Neurosurg — In this case the alignment changed from 5 degrees kyphotic to 30 degrees lordotic, which is a substantial change. Conclusion The prevalence of a HRVA in patients with subaxial cervical spine disorders is higher than in those without and osteoarthritis of the C facet joints correlates significantly with a HRVA.

At the time the article was last revised Rohit Sharma had no financial relationships to ineligible companies to disclose.

Klippel-Feil syndrome KFS refers to congenital cervical segmentation failure, which is a common bone structure deformity in the craniovertebral junction [ 12 ]. J Spine Surg ;9 4 Copy Download. As determined by eligibility criteria, none of the subjects had neither fractures within craniocervical junction, past procedure with cervical instrumentation, nor rheumatoid arthritis. Comparing to the previously estimated prevalence, the updated one has narrower confidence interval, and the weight is more evenly distributed across the studies. All patients in this study were treated with C joint distraction and occipitocervical fixation. Results: The data from 20 studies with subjects sides were analyzed. Related articles: Anatomy: Brain. J Craniovertebr Junction Spine , 13 1 , 01 Jan For all the patients in each group, we searched for HRVAs in axial slices 1 mm thick that were along the orthogonal horizontal plane Fig. Implications for instrumentation. The trajectory length of the subfacetal screws was smaller than that of pedicle screws; therefore, the biomechanical properties may be inferior to that of pedicle screws.