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)
OBJECT Usually additional anchors into the ilium are necessary in long fusion to the sacrum for degenerative lumbar spine disorders (DLSDs), especially for adult spine deformity. Although the use of anchors is becoming quite common, surgeons must always keep in mind that the sacroiliac (SI) joint is mobile and they should be aware of the kinematic(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)
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)
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