الفهرس 
Introduction
Surgical Anatomy of the Cervical SpineOnly 14 pages are availabe for public view
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Abstract
Posterior cervical fixation techniques passes thought wire fixation as the first application for this technique and then using of the plating system which was a great advance in the posterior fixation but drawbacks appears for this technique that limit its use.
The newly advance technique for the posterior cervical fixation is the use of polyaxial screw rod system in the lateral mass C1 and from C3-C6 and pars or pedicles screw for C2. This technique overcomes the limitation of previously used techniques.
In our study 25 patients with different cervical pathology underwent posterior cervical fixation by screw rod system in 22 cases and screw plate system in 3 cases. We use Magerl’s technique for the subaxial cervical spine with a direction of 20 degree to 25 degree lateral and cranial angulations parallel to the joint line of the adjacent facet joint, and Harms technique for C1 fixation.
All patients underwent preoperative clinical and imaging assessment and a follow up period of minimum 6 months (up to 2 years).
Our results simulate the results that had been published by other authors using the same technique. We didn’t experienced any vertebral artery injury or nerve root injury. No failure in the system or adjacent level pathology discovered during the follow up period.
Posterior cervical lateral mass fixation using screw-rod system considered an important procedure in producing immediate stability of the cervical spine, prevents kyphotic deformity, and probably precludes further development of spondylosis at fused levels in the cervical spondylotic disease. Lateral mass fixation in traumatic cervical spine injury it is a golden technique which provide a high safety intervention and high efficacy even with posterior compartment fractures. Several techniques describe the trajectory for the placement of the lateral mass screw to provide the safest pass without neural or vascular injury. Neurological outcome was satisfied without major complications.