Spine
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Comparative Study
Spinal instrumentation after complete resection of the last lumbar vertebra: an in vitro biomechanical study after L5 spondylectomy.
Human cadaveric ilio-lumbosacral spines were tested in an in vitro biomechanical flexibility experiment to investigate the biomechanical stability provided by four different types of spinal reconstruction techniques after spondylectomy of the L5 vertebral body. ⋯ After L5 spondylectomy, the L4-S1 cage with posterior short segment instrumentation provides stability in lateral bending that is not further increased by adding L3 pedicle-iliac screws and L4-S1 anterior plate. However, an anterior L4-S1 plate provides additional stability in flexion, extension, and axial rotation.
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Prospective and retrospective radiographic study of adult patients with spinal deformities. ⋯ This is the first study to develop and validate pragmatic predictive models for key spino-pelvic parameters (PT and SVA) in the setting of adult spinal deformity. Using a morphologic pelvic parameter (pelvic incidence) and spinal parameters modifiable through surgery (lumbar lordosis and thoracic kyphosis), postoperative sagittal alignment can be predicted.
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A case report. ⋯ Although the clinical course in malpositioned pedicle screw instrumentation may stay unremarkable, this case illustrates that in a proven injury to the thoracic aorta revision is mandatory to prevent further vascular damage. The appropriate strategy demands exact and provident planning using a preferably interdisciplinary approach.
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A retrospective case report. ⋯ Though rare, epidural hematomas are a possible complication when applying needling therapies. Therapists need to have precise knowledge of human anatomy, especially in the region where he or she will puncture. Continuous attention must be paid throughout the whole procedure.
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A prospective observational study. ⋯ On the basis of the results of this study in which only minor complications were encountered, it can be said that the frequency of major complications is pretty rare in transforaminal lumbar epidural steroid injections in expert hands and in the conditions in which safety precautions are taken.