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Abstract
The cervical spine is a highly mobile segment of the spinal column, liable to a variety to diseases and susceptible to trauma. It is a complex region where many vital structures lie in close proximity. Lateral mass screw fixation has become the method of choice in stabilizing subaxial cervical spine among other posterior cervical fixation techniques whenever the posterior elements are absent or compromised. Possible complications of cervical lateral mass screw placement are vertebral artery or nerve root injury, facet joint violations or inadequate placement. Forty normal cervical CT scans; obtained from the emergency unit as part of the trauma work-up, were included in this study plus a number of cervical cadaveric specimens obtained from the Alexandria Neuro-anatomy lap.