Fusion for treating double-segment lumbar spondylisthesis:follow-up evaluation of lumbar height, pelvic tilt angle and sacral slope angle
Yang Si-zhen
Ma Jin-feng
Wang De-chun
Abstract：BACKGROUND:Posterior lumbar interbody fusion with pedicle screws has been applied maturely in treating single-level lumbar spondylisthesis. However, little evidence has focused on the application of this operation in treatment of double-segment lumbar spondylolisthesis.
<br> OBJECTIVE:To investigate the clinical efficacy of posterior lumbar interbody fusion with pedicle screws in treatment of double-segment lumbar spondylolisthesis.
<br> METHODS:Twenty patients with double-segment lumbar spondylolisthesis were treated with posterior lumbar interbody fusion with pedicle screws, including posterior lumbar-spinal canal decompression, nerve root release, interbody graft fusion, pedicle screws reduction and fixation. Clinical functional recovery was assessed by Oswestry disability index and visual analog scale. Radiographic data including lumbar slippery percentage, lumbar slippery angle, lumbar height, pelvic tilt angle and sacral slope angle were measured. Al data was col ected 1 day before surgery, 1 day, 3 months, 6 months and 1 year after surgery, and every year constantly.
<br> RESULTS AND CONCLUSION:Al 20 patients were fol owed up for 6 months to 3 years. Oswestry disability index and visual analog scale were lower after surgery and at the final fol ow-up, when compared with before surgery (P<0.05). Lumbar disc height was significantly increased after surgery and at the final fol ow-up, than those of pre-operation (P<0.05). Lumbar slippery percentage, pelvic tilt angle and sacral slope angle were improved significantly after surgery and at the final fol ow-up, when compared with before surgery (P<0.05). During the fol ow-up, there were no signs of rupture, loosing or fal ing in the internal fixation and no pseudarthrosis. Reposition and reliable fusion of the bone graft were achieved satisfactorily in al patients. Al patients are satisfactory of posterior operation with pedicle screw internal fixation, reduction, decompression in treating double-segment lumbar spondylolisthesis, due to satisfactory reduction, reliable fixation, high fusion rate and reconstruction of normal sagittal sequence in lumbar spine, which can enhance the stability of lumbar spine.
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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：6( 1382-1387 )