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STUDY DESIGN A retrospective clinical study. OBJECTIVE To evaluate the effect of preservation of paraspinal muscles attached at the spinous process of C2 or C7 in selective laminoplasty on postoperative axial pain. SUMMARY OF BACKGROUND DATA Several methods of modified laminoplasty such as selective decompression and/or reconstruction of detached(More)
STUDY DESIGN Retrospective review. OBJECTIVE Evaluation of the impact of diabetes on lumbar spine surgery. SUMMARY OF BACKGROUND DATA Characteristics of diabetes that increase the risk of postoperative complications and poor surgical outcomes after lumbar spine surgery remain unclear. METHODS The demographic and clinical data of diabetic and(More)
STUDY DESIGN A cross-sectional study. OBJECTIVE To evaluate the segmental instability of wedging segments using dynamic films and the impact of osteophyte formation on segmental motion in degenerative lumbar scoliosis (DLS). SUMMARY OF BACKGROUND DATA Evaluation of segmental instability in DLS is essential for spinal surgery to make the decision "fusion(More)
Bone morphogenetic proteins (BMPs) were originally identified as osteoinductive proteins. With cloning of BMP genes, studies of BMPs and their clinical application have advanced. However, with increasing clinical applications, drug delivery systems and production costs have become more important issues. To address these issues, we asked whether E.(More)
Preoperative definitive diagnosis of intradural lumbar disc herniation (ILDH) is difficult despite the availability of various neuroradiological investigative tools. We present a case of ILDH diagnosed preoperatively by discography and computed tomography-discography (disco-CT).The patient was a 63-year-old man with acute excruciating right leg pain.(More)
OBJECT Minimally invasive decompressive surgery using a microscope or endoscope has been widely performed for the treatment of lumbar spinal canal stenosis (LSS). In this study the authors aimed to assess outcomes following microscopic bilateral decompression via a unilateral approach (MBDU) in terms of postoperative bone regrowth and preservation of the(More)
OBJECTIVE Increasing soft-tissue mass posterior to the odontoid process causes spinal cord compression. Retro-odontoid pseudotumors are considered to be associated with atlantoaxial instability in patients with rheumatoid arthritis (RA), but the exact mechanism by which these lesions develop has not been elucidated. The purpose of this study was to identify(More)
OBJECTIVE Little is known about the relationship between sagittal spinal alignment in patients with lumbar spinal canal stenosis (LSS) and objective findings such as spinopelvic parameters, lumbar back muscle degeneration, and clinical data. The purpose of this study was to identify the preoperative clinical and radiological factors that predict improvement(More)
Objective The lumbar lesion in rheumatoid arthritis (RA) have been paid less attention, but some previous studies demonstrated the high prevalence of lumbar spondylolisthesis and lumbar scoliosis. The lumbar lesion accompanied with RA is often difficult to treat, and it is important to know the characteristics of lumbar lesion in RA patients. The purpose of(More)