Thesis (Ph.D.) - Cairo University - Faculty of Medicine - Department of Neurosurgery

Objective: This study details analysis of the indications, safety, efficacy and complications of dynamic cervical replacement for replacement of cervical disc in cases cervical disc diseases compared to PEEK cage insertion. Results: Average age of presentation was 44.1 years for both groups, female ratio for the fixed group was 1.5:1, and 1:1.08 for the dynamic group, with age ranged between 35 and 53 years for both studies with an average of 44.1 +/- 6.345 years. The average duration of symptoms was 51.4 weeks.. The average follow up period in our study was 22.5 months, 21 cases had left sided radiculopathy, 10 cases had right sided affection. The most common presenting symptom after brachialgia (100%) was neck pain, most common sign was sensory changes. Most common operated level was C5-6 for both groups. The average follow up period in our study was 22.5 months with no recurrence, instability or progressive kyphosis. Conclusion: The dynamic cervical implant (DCI) is the alternative to cage fusion and total disc prosthesis with a wider range of indications. The DCI implant offers stable, controlled (adequate) motion to already significantly degenerated motion segments. In addition the implant is axial compliant offering capabilities to avoid overloading and accelerated degeneration of the adjacent segments above and below the treated segment

Issued also as CD