| Home | Magazines | Editorial Board | Instruction | Subscribe Guide | Archive | Advertising | Template | Guestbook | Help |
| XING Zejun,ZHANG Jianguo,YU Bin.Distal junctional changes in adolescent idiopathic scoliosis following posterior correction[J].Chinese Journal of Spine and Spinal Cord,2010,20(1):29-33. |
| Distal junctional changes in adolescent idiopathic scoliosis following posterior correction |
| Received:August 07, 2009 Revised:November 23, 2009 |
| English Keywords:Adolescent idiopathic scoliosis Pedicle screw Distal junctional changes Posterior cprrection |
| Fund: |
|
| Hits: 3931 |
| Download times: 3365 |
| English Abstract: |
| 【Abstract】 Objective：To investigate distal junctional changes on the coronal，saggital and axial plane in adolescent idiopathic scoliosis（AIS） undergoing posterior correction.Method：32 AIS cases from June 2005 to June 2007 undergoing surgery were reviewed retrospectively.There were 6 males and 26 females with an average age of 14.4 years（range，10 to 19 years old）．The curve types included PUMCⅠc 1 case，Ⅱa 4 cases，Ⅱb 9 cases，Ⅱb2 1 case，Ⅱc1 1 case，Ⅱc3 5 cases，Ⅱd1 5 cases ，Ⅲa 5 cases，Ⅲb 1 case.All of them undergoing posterior correction using pedicle screw constructs alone were divided into 2 groups：group A，15cases，with the lowest instrumented vertebrae（LIV） of stable vertebrae（SV）（SV=LIV）；group B，17cases，with LIV of not the stable vertebrae（SV≠LIV）.Radiographic measurements from standing anterio-posterior and lateral radiographs before surgery and at final follow-up including trunk shift（TS），lowest instrumented vertebrae tilt（LIVT），distal disc angulation（LIVA），coronal and sagittal Cobb angle of distal junction（LIV+2），axial rotation of distal junction（LIV+1 vertebral rotation and LIV+2 vertebral rotation） were collected and analyzed.Result：The average follow-up was 29 months（range，24 to 36 months）.There were no statistic difference in TS before surgery and at final follow-up in both groups（P＞0.05）.The LIVT was corrected from 20.2°±5.9° before surgery to 4.7°±3.8° at final follow-up（P＜0.001） in group A and 17.2°±5.5° to 4.4°±2.7°（P＜0.001） in group B.The LIVA was corrected from 7.5°±4.7° before surgery to 3.9°±3.1° at final follow-up（P＝0.056） in group A and 4.5°±3.4° to 5.4°±3.2°（P＝0.492） in group B.The LIVA change was not significantly correlated with the change of the LIVT in both group（group A：r＝-0.067，P=0.813；group B：r＝0.362，P=0.154）.The coronal Cobb of LIV+2 improved significantly from 20.5°±9.6° before surgery to 9.4°±7.3° at final follow-up（P＜0.001） in group A and 13.8°±6.7° to 8.1°±4.7°（P=0.013） in group B.There was no significant difference in saggital curve correction of LIV+2 in both groups（group A：P＝0.464，group B：P=0.598）.The correlation of saggital curve correction was not significant in group A（r＝0.076，P＝0.788） while significant in group B（r＝0.803，P＜0.001）.There were no significant difference of LIV+2 curve axial correction in both groups（P＞0.05）.Conclusion：The distal junctional correction for AIS due to pedicle screw fixation is more significant on the coronal plane rather than the sagittal plane and axial plane，meanwhile the lowest instrumented vertebrae tilt is decreased after surgery. |
| View Full Text View/Add Comment Download reader |
| Close |
|
|
|
|
|