During spinal movements the dural end sac undergoes displacement and deformation, chiefly because of bulging of intervertebral disks and flaval ligaments in lumbar extension. Under normal circumstances these dural changes of form do not lead to clinical symptoms. However, in patients with spinal stenosis radiologic signs may be accentuated in lumbar extension. These tend to disappear in flexion...

Degenerative lumbar spinal stenosis is caused by mechanical factors and/or biochemical alterations within the intervertebral disk that lead to disk space collapse, facet joint hypertrophy, soft-tissue infolding, and osteophyte formation, which narrows the space available for the thecal sac and exiting nerve roots. The clinical consequence of this compression is neurogenic claudication and varyi...

Introduction Low-back pain causes sleep disorders, which impairs the quality of life (QOL) patients. Sleep disorders are associated with lumbar spinal stenosis (LSS); however, postoperative effects LSS surgery on unknown. This study aimed to assess in patients using wearable activity trackers and determine whether improves quality.

For complex lumbar spinal stenosis, using of endoscopy technique may provide clear vision with less invasive dissection of paravertebral muscle. The objective of this study was to evaluate the feasibility and clinical efficacy of bilateral decompression and intervertebral fusion via unilateral fenestration for complex lumbar spinal stenosis using mobile microendoscopic discectomy (MMED) techniq...

Two collagen type IX gene polymorphisms that introduce a tryptophan residue into the protein's triple-helical domain have been linked to an increased risk of lumbar disc disease. To determine whether a particular subset of symptomatic lumbar disease is specifically associated with these polymorphisms, we performed a prospective case-control study of 107 patients who underwent surgery of the lum...