Yohei Matsuo

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STUDY DESIGN In vivo 3-dimensional (3D) study of the thoracic spine. OBJECTIVE To demonstrate axial rotations (ARs) and coupled motions of the thoracic spine. SUMMARY OF BACKGROUND DATA In vivo 3D kinematics of the thoracic spine in trunk rotation with intact thorax and soft tissues has not been well-known.There were no quantitative data of AR in the(More)
BACKGROUND CONTEXT There has been no study regarding the effect of intermittent administration of teriparatide (TPTD [recombinant human parathyroid hormone (1-34)]) on spinal fusion in patients with glucocorticoid-induced osteoporosis (GIOP). PURPOSE To elucidate the effect of intermittent administration of TPTD on spinal fusion in rats with GIOP. STUDY(More)
BACKGROUND Although clinical bone morphogenetic protein (BMP) therapy is effective at enhancing bone formation in patients managed with spinal arthrodesis, the required doses are very high. Teriparatide (parathyroid hormone 1-34) is approved by the U.S. Food and Drug Administration to treat osteoporosis and is a potent anabolic agent. In this study,(More)
BACKGROUND CONTEXT Bone morphogenetic proteins (BMPs) are a group of dimeric growth factors that belong to the transforming growth factor super family and are capable of eliciting new bone formation. Previous studies have suggested that the coexpression of two different BMP genes in a cell can result in the production of BMP heterodimers that are more(More)
OBJECTIVE To clarify the three-dimensional (3D) morphometric characteristics of the spine in patients with degenerative spondylolisthesis (DS). METHODS 3D morphometric analyses of laminae and facets were performed and compared for a DS group, an age-matched spinal canal stenosis (LCS) group, and a control group of young persons without spinal disease. 3D(More)
STUDY DESIGN A cohort study OBJECTIVE.: To investigate the association between psychosocial stress and low back pain (LBP) related interference with daily living among college students. SUMMARY OF BACKGROUND DATA Few longitudinal studies have examined the likelihood of developing LBP in the presence of a designated psychosocial stressor. All participants(More)
OBJECT Cervical laminoplasty is an effective procedure for decompressing the spinal cord at multiple levels, but restriction of neck motion is one of the well-known complications of the procedure. Although many authors have reported on cervical range of motion (ROM) after laminoplasty, they have focused mainly on 2D flexion and extension on lateral(More)
BACKGROUND CONTEXT In vivo three-dimensional kinematics of the thoracic spine in trunk lateral bending with an intact rib cage and soft tissues has not been well documented. There is no quantitative data in the literature for lateral bending in consecutive thoracic spinal segments, and there has not been consensus on the patterns of coupled motion with(More)
A considerable portion of chronic low back pain (cLBP) patients lack anatomical abnormality, resist conventional therapeutic interventions, and their symptoms are often complicated with psychological and social factors. Such patients have been reported to show cerebral abnormalities both in anatomy and function by neuroimaging studies. Here we examined(More)