Journal of spinal disorders & techniques
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J Spinal Disord Tech · Dec 2007
The Ponte procedure: posterior only treatment of Scheuermann's kyphosis using segmental posterior shortening and pedicle screw instrumentation.
Case series. ⋯ Therapeutic study, level IV [case series (no, or historical, control group)].
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J Spinal Disord Tech · Dec 2007
Biomechanical evaluation of an injectable radiopaque polypropylene fumarate cement for kyphoplasty in a cadaveric osteoporotic vertebral compression fracture model.
Vertebral compression fractures cause pain, deformity, and disability. Polypropylene fumarate (PPF) has shown promise as an injectable cement for bone defects but little is known about its performance for kyphoplasty. The purpose of this study was to evaluate the biomechanical performance of PPF for kyphoplasty in simulated anterior compression fractures in cadaveric vertebral bodies. ⋯ There was no significant difference in treatment with either PMMA or PPF-30. The biopolymer PPF-30 exhibits mechanical properties similar to PMMA in a cadaveric kyphoplasty model. PPF biopolymer may be a suitable alternative for kyphoplasty.
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J Spinal Disord Tech · Dec 2007
Comparative StudyCervical range of motion and alignment after laminoplasty preserving or reattaching the semispinalis cervicis inserted into axis.
A radiographic study in 111 patients using radiographs was conducted. ⋯ This modified laminoplasty preserving the SSC inserted into C2 is an effective procedure for maintaining postoperative ROM, especially in extension, and sagittal alignment of the upper cervical spine well.
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J Spinal Disord Tech · Dec 2007
Comparative StudyAnterior corpectomy with iliac bone fusion or discectomy with interbody titanium cage fusion for multilevel cervical degenerated disc disease.
Clinical and radiologic study evaluating the outcome after anterior corpectomy with iliac bone fusion compared with discectomy with interbody titanium cage fusion for multilevel cervical degenerated disc disease. ⋯ Either a multilevel discectomy and cage fusion with plating or a corpectomy and iliac bone fusion with plating provides good clinical results and similar fusion rates for cervical degenerative disc disease. However, absence of donor site complications and construct failures and shorter hospital stay make the multilevel discectomy and cage fusion with plate fixation better than corpectomy and strut graft fusion with plate fixation.
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J Spinal Disord Tech · Dec 2007
The use of fuzzy logic to select which curves need to be instrumented and fused in adolescent idiopathic scoliosis: a feasibility study.
Selection of the appropriate curve fusion levels for surgery in adolescent idiopathic scoliosis (AIS) is a complex and difficult task. Despite numerous publications on this subject, the decision as to which spinal curve, that is proximal thoracic, main thoracic or lumbar, needs to be instrumented and included in the fusion relies mostly on each surgeon's past experience, although recently published data have revealed a high variability of spinal instrumentation configurations among spinal surgeons in AIS. This situation exists because of ambiguity and vagueness in the decision process. ⋯ When all input values are entered in the model for a specific subject with AIS, the software calculates the level of suggestion for the indication to perform an instrumentation and fusion of the high thoracic and/or lumbar curves for this particular subject. The usefulness of this approach is demonstrated using illustrative cases. This is the first report on the use of fuzzy logic to assist the decision-making process in the field of spinal deformity surgery and the results suggest that this approach may be useful to facilitate surgical planning in difficult or borderline cases of AIS.