Spine
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Case Reports Comparative Study
Recapping T-saw laminoplasty for spinal cord tumors.
A prospective study of patients whose spinal cord tumors were managed surgically with a unique posterior method of removing and replacing the posterior spinal elements using T-saw ("recapping T-saw laminoplasty"). ⋯ Recapping laminoplasty afforded anatomic reconstruction of the vertebral arch after excision of spinal cord tumors. This procedure appears to warrant further evaluation as an alternative to wide laminectomies for exposure of intraspinal tumors.
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Comparative Study
Kinematics of the chest cage and spine during breathing in healthy individuals and in patients with adolescent idiopathic scoliosis.
The lung function test by a Plethysmograph enabled calculations to be made of the total lung capacity and vital capacity. A Motion Analysis System (Elite, BTS Inc., Milano, Italy) was used to observe and record chest cage and spinal movements and as to correlate lung function with the chest cage and spine kinematics. ⋯ The range of movement of the chest cage and spine is more limited in the scoliotic cases. This overall stiffness of the chest cage and the spine may contribute to the mechanical inefficiency and impairment of pulmonary function found in scoliotic patients.
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Comparative Study
Evaluation of cervical laminectomy and laminoplasty. A longitudinal study in the goat model.
An evaluation of the longitudinal radiologic changes up to 6 months induced by multilevel laminectomy and laminoplasty and the biomechanical responses in the goat model, complemented by biomechanical studies of intact specimens. ⋯ Radiographic and biomechanical results in the goat model suggest that laminoplasty is superior to laminectomy in maintaining cervical alignment and preventing postoperative spinal deformities.
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An investigation of the in vitro biomechanical effects of multilevel fenestrations and discectomies on the behavior of whole lumbar spine motion, using a material testing system (Instron 1341, Instron Limited, High Wycombe, England) and Elite three-dimensional motion analysis system (BTS, Milano, Italy). ⋯ The results demonstrate that multilevel fenestrations and discectomies affect lumbar spinal stability in flexion, but have no effect on the stability of the lumbar spine in lateral bending or axial rotation.