The Correlation Study On Spine And Pelvic Sagittal Morphology In Degenerative Lumbar Scoliosis Patients

Objective:To investigate the cases of degenerative scoliosis of the spine sagittal pelvic morphologyMethods:110 patients with degenerative scoliosis and spine were normal volunteers,70 patients (age> 40 years) are taken standing full spine radiographs and to measure the following parameters:T2～T5Cobb angle, T5～T12Cobb angle, T10～L2Cobb angle, T12～S1Cobb angle, pelvic angle of projection (PI), sacral inclination angle (SS) and pelvic tilt (PT). Classification criteria under the SRS degenerative sagittal correction parameters, patients with degenerative scoliosis spinal sagittal split into three groups,Ⅰgroup:Cobb angle of all spinal segments were within the normal standard SRS;Ⅱgroup:T12-S1Cobb lordosis angle of less than or equal 40°, the remaining segments of the spine in the normal range of Cobb angle;ⅢGroup:T12-S1Cobb lordosis angle of less than or equal 40°, T10～L2Cobb kyphosis angle greater than or equal 20°, Cobb angle of the remaining segments of the spine in the normal range. The control group compared with the group of degenerative scoliosis between pelvic parameters, and analysis of different groups of pelvic parameters and sagittal spinal parameters of relevance.Results:(1),the normal control group andⅠgroup,Ⅱgroup, PI values showed significant differences in degenerative scoliosis cases in I group were compared withⅡgroup,Ⅲgroup PI values were significantly different;(2),the normal control group andⅠgroup,Ⅱgroup,Ⅲgroup SS values were significantly different;Ⅰgroup were compared withⅡgroup,Ⅲgroup of the SS value of significant differences; PT value in the four groups showed no difference;(3),normal control group, I set parameters in the pelvis and spine sagittal obvious correlation between parameters;(4),Ⅱgroup correlation between the pelvic parameters, but the pelvis and spine sagittal parameters were no significant correlation;(5),Ⅲgroup, the pelvis the correlation between parameters and the parameters of the sagittal plane with the spine showed no significant correlation.Conclusion:degenerative scoliosis There are 2 types of PI; and the original lines of force of spinal sagittal relationship with the PT and SS were destroyed.