Radiographic Analysis Of Sagittal Parameters In One Level Anterior Cervical Discectomy And Fusion

Background: Anterior cervical discectomy and fusion(ACDF)is one of the most commonly performed spine procedures.It can be used to correct cervical kyphotic deformity,which is the most common cervical deformity,and is often performed using lordotic interbody devices.Worsening of the cervical sagittal parameters is associated with decreased health-related quality of lifeObjective:The main objective of this study was to evaluate the outcomes of sagittal parameters in patients with cervical spondylosis myelopathy who underwent one level Anterior cervical discectomy and fusion(ACDF).Methods and Materials: From 2013 till 2016 a total number of Twenty-two patients underwent single level ACDF using polyetheretherketone(PEEK)cage with plating.All the patients were diagnosed with Cervical Spondylosis Myelopathy as confirmed on MRI scan.X-rays were taken pre-and post-operation.With the use of Radi Ant DICOM viewer(64 bit)program,we analyzed various sagittal parameters which included: Cobb's angle C0-2,Cobb's angle C2-7,C2-7 SVA,Neck Tilt(NT),T1-slope,and TIA.PEEK cage sizes used the patients were recorded.Results: Twenty-two patients underwent single level ACDF using a PEEK cervical cage with plating.The operative levels were C3/4 in five patients,C4/5 in five patients,and C5/6 in twelve patients.PEEK cervical cage sizes used were;size 8 in one patient,size 7 in ten patients,size 6 in ten patients.The mean Age of the patients was 52.27,age range 36-72.Cobb's angle C0-2 was 17.39 ± 15.04,P<0.05;Cobb's angle C2-7 was-1.55 ± 10.35,P>0.05;C2-7 SVA was 2.54 ± 11.35,P>0.05;NT was-7.78 ± 9.03,P<0.05;T1Slope was3.85 ± 7.73,P<0.05;TIA was-7.85 ± 9.80,P<0.05.Conclusions: after Analyzing the sagittal parameters that influence on the sagittal balance,cobb's angle C2-7 and C2-7 SVA were not significantly changed.Cobb's angle C0-2,NT,T1-slope and TIA were significantly changed.We can draw a conclusion that single level ACDF using PEEK cage with plating remains an effective method of treatment in patients with one level Cervical Spondylosis Myelopathy.