Abstract
Aim
To assess the safety of Zero Profile Interbody fusion (Zero P) device in Anterior Cervical Decompression and fusion (ACDF) for degenerative cervical stenosis.
Method
89 consecutive patients treated with Zero P interbody device from September 2009 to September 2012 were included in this retrospective study.
Inclusion criterion: degenerative cervical stenosis with myelopathy, persistent radiculopathy after at least 3 months of failed conservative management.
Exclusion criterion: Paediatric population; patients with infection, metastatic disease and trauma.
There were 39 females, 50 males with mean age of 55 (ranging from 24 to 84 years)
56 (64%) had surgery at 1 level, 31 (35%) at 2 levels, 1 (1%) at 3 levels. Total number of levels operated were 121. Common levels operated were C56 (62%) and C67 (47%)
Majority were operated due to radicular symptoms, 56 (64%) had radicular symptoms, 28(31%) had myelopathy and 5 (5%) Myeloradiculopathy
Results
All had a minimum of 6 months follow up (maximum 2 years).
No patient had cage subsidence or extrusion. 1 had superficial infection which settled with antibiotics, 10 (11%) had dysphagia which settled in 6 to12 weeks
Conclusions
Our study demonstrates that ACDF with Zero P can be considered a safe option in management of patients with cervical degenerative stenosis. We would will also recommend a prospective randomised study as a follow on to this retrospective study. Preoperative kyphosis or lordosis did not change the outcome or make the surgical technique any more difficult, hence this implant can also be used in these circumstances.
Conflicts of interest: No conflicts of interest
Sources of funding: No funding obtained
