Observation of degenerative lumbar scoliosis progression after short-segment fixation and fusion
MENG Xiang-long
HAI Yong
LU Shi-bao
YANG Jin-cai
SU Qing-jun
GUAN Li
ZANG Lei
KANG Nan
Abstract：Objective To investigate the changes of lumbar scoliosis angle, lumbar lordosis angle and wedging angle of the upper adjacent disc level during the follow-up of 3-5 years after short-segment ifxation and fusion for degenerative lumbar scoliosis. Methods From December 2006 to November 2010, 39 patients with degenerative lumbar scoliosis underwent posterior lumbar canal decompression and short-segment pedicle screw fixation and fusion, whose clinical data were retrospectively analyzed. There were 14 males and 25 females, whose mean age was ( 67.3±8.5 ) years old ( range:51-79 years ). The X-ray iflms preoperatively, at 1 month and 1 year after the operation and in the latest follow-up were collected, and the coronal Cobb’s angle, lumbar lordosis angle and wedging angle of the upper adjacent disc level were measured and compared. The preoperative and postoperative radiological parameters were compared with that in the latest follow-up. Results The mean follow-up time was ( 45.2±10.3 ) months ( range:36-66 months ). No signiifcant progression was observed in lumbar scoliosis angle postoperatively and in the latest follow-up. The postoperative Cobb’s angle, lumbar lordosis angle and wedging angle of the upper adjacent disc level were improved after the surgery, but no statistically signiifcant differences were found before and after the operation. The Cobb’s angle was increased from 0° to 9° in 17 cases ( 43.6% ) during the follow-up, but did not exceed the preoperative angle. There were 12 patients ( 30.8%) whose lumbar lordosis angle was 0°-11° before the operation. The lordosis angle was obviously improved from 16.5° to 30° in 6 of the 12 patients after the operation, but was decreased from 7.1° to 11.4° in 4 patients during the follow-up. The wedging angle of the upper adjacent disc level progressed from 0° to 3.3° in the latest follow-up and by 0.51° per year on average, and there were no statistically signiifcant differences when compared with the preoperative angle. Conclusions Lumbar Cobb’s angle, lumbar lordosis angle and wedging angle of the upper adjacent disc level can be immediately improved after short-segment ifxation and fusion for degenerative lumbar scoliosis, and there is no obvious progression during the follow-up of 3-5 years.
Keywords：Spinal curvaturesScoliosisSpinal fusionLumbar vertebrae
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 193-197 )