الفهرس 
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Abstract
Surgery of the craniocervical region is one of the common surgeries in neurosurgery; this is attributed to the high number of patients with complaints related to pathologies in this part of the spine. Of the common pathologies encountered in the practice of neurosurgery in relation to craniocervical region is craniocervical region instability. Many approaches have been invented to deal with such pathology, such as posterior fixation using screw-rod technique.The aim of this study was to assess the efficacy and safety of the posterior fixation using screw-rod system in patients with craniocervical region instability.Twenty patients presented with craniocervical region instability of different types and due to different causes were included in this study.On examination, different signs were noted, motor, and sensory deficit, and reflex changes. Modified Japanese Orthopaedic Association score was used to assess the degree of the deficits.Different investigations were done including laboratory investigations and different imaging studies such as plain X-ray, CT scan, and MRI.
In this study, twenty patients were operated upon with posterior fixation using screw-rod technique.The details of surgery were reviewed and so are the complications we faced whether intra-operatively or post-operatively for a period of sixteen months.Complications include, CSF leak in one patient (5%), neurological deficit in two patients (10%), wound infection in three patients (15%), and no postoperative complications were encountered in fourteen patients (70%).
Postoperatively, neck pain had improved in all patients. 2 patients were mJOA score grade III (10%), 1 patient was mJOA score grade II (5%), 11 patients were mJOA score grade I (55%), and 6 patients were normal (30%) according to mJOA score. Solid fusion was achieved in all patients.
The results in the present study were gathered and compared with the other studies.