Optimal Entry Point and Trajectory for Anterior C1 Lateral Mass Screw

Clinical Spine Surgery : a Spine Publication
Yong HuTodd J Albert

Abstract

A radiographic analysis of the anatomy of the C1 lateral mass using computed tomography (CT) scans and Mimics software. To define the anatomy of the C1 lateral mass and make recommendations for optimal entry point and trajectory for anterior C1 lateral mass screws. Although various posterior insertion angles and entry points for screw insertion have been proposed for posterior C1 lateral mass screws, no large series have been performed to assess the ideal entry point and optimal trajectory for anterior C1 lateral mass screw placement. The C1 lateral mass was evaluated using CT scans and a 3-dimensional imaging application (Mimics software). Measuring the space available for the anterior C1 lateral mass screw (SAS) at different camber angles from 0 to 30 degrees (5-degree intervals) was performed to identify the ideal camber angle of insertion. Measuring the range of sagittal angles was performed to calculate the ideal sagittal angle. Other measurements involving the height of the C1 lateral mass were also made. The optimal screw entry point was found to be located on the anterior surface of the atlas 12.88 mm (±1.10 mm) lateral to the center of the anterior tubercle. This optimal entry point was found to be 6.81 mm (±0.59 mm) s...Continue Reading

References

Jan 1, 1994·Acta neurochirurgica·A Goel, V Laheri
Nov 15, 2001·Spine·J Harms, R P Melcher
May 26, 2004·Neurosurgery·Michael Y Wang, Srinath Samudrala
Apr 12, 2007·Spine·David M ChristensenBradford L Currier
Jun 20, 2008·Journal of Huazhong University of Science and Technology. Medical Sciences = Hua Zhong Ke Ji Da Xue Xue Bao. Yi Xue Ying De Wen Ban = Huazhong Keji Daxue Xuebao. Yixue Yingdewen Ban·Yong HuQiu Chen
Aug 1, 2009·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Serkan SimsekAlaittin Elhan
Jun 19, 2013·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Weihu MaJiayong Liu
Sep 6, 2013·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Yong HuCheng-tao Wang
Jan 21, 2014·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Jincheng YangQingshui Yin

❮ Previous
Next ❯

Citations

Sep 28, 2016·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Hua ChenHao Liu

❮ Previous
Next ❯

Related Concepts

Related Feeds

Aphasia

Aphasia affects the ability to process language, including formulation and comprehension of language and speech, as well as the ability to read or write. Here is the latest research on aphasia.