Clinical effects of Zero-P vs.traditional titanium plate for single level cervical spondylosis / 西安交通大学学报(医学版)

ABSTRACT

ABSTRACTObjective To compare the clinical effects of Zero-P and traditional titanium plate with cage in treating single level cervical spondylosis.Methods We retrospectively analyzed the clinical data of 28 patients with single level cervical spondylosis who underwent anterior cervical discectomy and fusion (ACDF)by traditional titanium plate with cage (group A,n=16)or Zero-P implant (group B,n=16)in our department between January 2012 and January 2014.The intraoperative blood loss,operation time,postoperative JOA scores,JOA recovery rate,NDI scores,and dysphagia incidence in both groups were measured and compared.The changes of the midpoint interbody height (IBH),the cervical Cobb angle of the surgical segment and the cervical Cobb angle of C2 and C7 vertebral body were measured on the standing lateral cervical spine X-ray.Results The operation time was significantly longer in group A than in group B (P 0 .0 5 ).The incidence of dysphagia was lower in group B than in group A.The two groups did not significantly differ in JOA score or JOA improvement rate during the same period after operation (P>0.05).The NDI score in group B was significantly lower than that in group A (P0 .0 5 ).The midpoint interbody height in group B was significantly greater than that in group A (P0.05).Conclusion Zero-p and traditional titanium plate with cage have similar effects in treating single level cervical spondylotic myelopathy,and Zero-P system has the advantages of lower incidence of dysphagia after operation,shorter operation time and better recovery of postoperative cervical physiological structure.