Modified Trajectory of C2 Laminar Screw-Double Bicortical Purchase of the Inferiorly Crossing Screw

The crossing laminar screw fixation might be the most recently developed approach among various fixation techniques for C2. The new construct has stability comparable to transarticular or transpedicular screw fixation without risk of vertebral artery injury. Quantitative anatomical studies about C2...

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Bibliographic Details
Published inJournal of Korean Neurosurgical Society Vol. 43; no. 2; pp. 119 - 122
Main Authors Rhee, Woo-Tack, You, Seung-Hoon, Jang, Yeon-Gyu, Lee, Sang-Youl
Format Journal Article
LanguageKorean
Published 2008
Subjects
Laminar screw
Occipitocervical fixation
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Summary:The crossing laminar screw fixation might be the most recently developed approach among various fixation techniques for C2. The new construct has stability comparable to transarticular or transpedicular screw fixation without risk of vertebral artery injury. Quantitative anatomical studies about C2 vertebra suggest significant variation in the thickness of C2 lamina as well as cross sectional area of junction of lamina and spinous process. We present an elderly patient who underwent an occipito-cervical stabilization incorporating crossed C2 laminar screw fixation. We preoperatively recognized that she had low profiles of C2 lamina, and thus made a modification of trajectory for the inferiorly crossing screw. We introduce a simple modification of crossing C2 laminar screw technique to improve stability in patients with low laminar profiles.
Bibliography:KISTI1.1003/JNL.JAKO200814364022936
ISSN:2005-3711
1598-7876