Correlation Between Cervical Spondylosis With Posterior Longitudinal Ligament Ossification And Sagittal Parameters In Radiology

Objective: Discuss the correlation between OPLL and cervical sagittal balance.Methods: Collect the patients diagnosed with "cervical spondylosis" in the First Affiliated Hospital of Guangxi Medical University,and then select the patients with "ossification of the posterior longitudinal ligament of the cervical spine" from them,and obtain a diagnosis of "cervical spine" from September2014 to September 2019 A total of 49 patients with ossification of the longitudinal ligament" were simultaneously selected,and 49 patients without ossification of the posterior longitudinal ligament were randomly selected from the "cervical spondylosis" patients as a control group.Collect the general data of the two groups of patients,including the patient’s age,gender,T1 S,CSVA,CL on the posterior longitudinal ligament ossification group and the control group,and divide them into mixed type and segment according to the type of cervical longitudinal ligament Type,limited type,continuous type,and measure the thickness and length of the posterior longitudinal ligament ossification of the cervical spine,calculate the maximum spinal canal occupation rate,and use the Pfirrmann classification method to classify the degenerated intervertebral disc on MRI.Use SPSS 23.0 to analyze the appeal data.Results: 1.The age of the ossification group and the control group(P<0.05);CSVA(P <0.01);CL(P <0.05),There are statistical differences.2.CL in the ossification group was positively correlated with T1S(r =0.523,P <0.001),and the length and thickness of ossification were positively correlated(r = 0.412,P <0.005).3.Among patients with cervical spondylosis and posterior longitudinal ligament ossification,C4 / 5 and C5 / 6 intervertebral disc degeneration is more serious than other segments,C4,C5 and C6 vertebral body has the highest rate of bone hyperplasia and the most common sites for ossification are C4/5(61.2%)and C5/6(59.1%).4.The thickness of mixed ossification is more statistically different than the segment type and limitation(P<0.05),The lengths of continuous and mixed ossifications were statistically different than those of segmental and localized types(P<0.01).5.The cervical spine CSVA and age are Index for predicting ossification of posterior longitudinal ligament of the cervical spine.Conclusions: 1.Among patients with cervical spondylosis and posterior longitudinal ligament ossification,C4,C5 and C6 have the highest rate of vertebral hyperplasia,C4 / 5,C5 / 6 intervertebral disc degeneration is severe,and posterior longitudinal ligament ossification is more likely to occur in C4 / 5,C5 / 6 segment,age and CSVA are closely related to the occurrence of ossification.2.Continuous and mixed posterior longitudinal ligament ossification is more likely to cause compression of the spinal cord than segment type and limitation.3.Patients with cervical posterior longitudinal ligament ossification are more prone to sagittal imbalance.4.The cervical spine CSVA and age can be used as indicators to predict the occurrence of ossification of the posterior longitudinal ligament.