TY  - JOUR
A1  - ,  
T1  - Spur on posterior arch of atlas with fatal spinal cord compression - a case report
JO  - Eur. J. Anat.
SN  - 1136-4890
Y1  - 2016
VL  - 20
SP  - 87
EP  - 91
UR  - http://www.eurjanat.com/web/paper.php?id=150216as
KW  - Atlas vertebra
KW  - Anterior arch
KW  - Posterior arch
KW  - Cranio-vertebral junction
KW  - Atlas spur
KW  - Spinal canal stenosis
KW  - Myelopathy 
N2  - The atlas vertebra has many developmental variations in its structure, mainly on its posterior arch with prevalence varying from 0.69% to 4%. It includes a spur on the anterior arch, a thickened anterior arch, posterior pointiculus and incomplete posterior arch among others. Some of the variations are associated with spinal stenosis, such as hypoplastic arch and ossification of the posterior longitudinal ligament. The anomalies are generally asymptomatic, but occasionally cause neck pain, and rarely myelopathy. In the case reported here, a spur was present in the midline on the anterior surface of the posterior arch of the atlas. This led to gradual compression of the cervical spinal cord with progressive quadriplegia, numbness and death. Myelopathy was confirmed by histopathology.
ER  -