Spine
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Multicenter Study Clinical Trial
Perioperative changes in pulmonary function after anterior scoliosis instrumentation: thoracoscopic versus open approaches.
A prospective evaluation of pulmonary function in patients with adolescent idiopathic scoliosis undergoing surgical correction. ⋯ The thoracoscopic approach causes a smaller decline in pulmonary function 3 months and 1 year after surgery as compared to the more invasive technique of open thoracotomy for anterior spinal instrumentation for correction of adolescent idiopathic scoliosis.
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Case Reports
Ossification of the posterior atlantoaxial membrane and the transverse atlantal ligament.
Case report. ⋯ Ossification of various parts of the spinal ligament have been reported previously. Among them, ossification of both the PAAM and TAL has never been reported previously and is thus extremely rare. Surgical intervention improved the neurological impairment.
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Comparative Study
Comparison of Healos/bone marrow to INFUSE(rhBMP-2/ACS) with a collagen-ceramic sponge bulking agent as graft substitutes for lumbar spine fusion.
A rabbit lumbar intertransverse process arthrodesis model was used to evaluate the efficacy of two different bone substitute materials: 1) collagen-hydroxyapatite sponge (Healos bone void filler) combined with heparinized bone marrow; and 2) recombinant human bone morphogenetic protein-2 delivered in a collagen sponge (INFUSE Bone Graft) wrapped around an additional collagen-ceramic sponge (Mastergraft Matrix) as a "bulking agent." ⋯ From the manual palpation, radiographic and biomechanical assessment of fusion, the results in this study showed that INFUSE (rhBMP-2/collagen sponge) consistently produced spine fusion when wrapped around a collagen-ceramic sponge bulking agent (Mastergraft Matrix). Meanwhile, Healos was ineffective as a bone graft material when combined with heparinized autogenous bone marrow.
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Case Reports
Posterior transcanal lumbar interbody fusion for septic vertebral fracture pseudarthrosis and sitting imbalance.
Case report. ⋯ This extremely rare case focuses on the use of the transcanal approach to treat adequately lumbar septic pseudarthrosis and restore lumbar lordosis in definitively paraplegic patients in whom no anterior approach can be used.
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A retrospective evaluation and characterization of the trajectory of atlantoaxial transarticular screws inserted using an aiming device. ⋯ The atlantoaxial transarticular screw was inserted safely as aimed by using the aiming device. The trajectory was characterized by less bone thickness dorsal to the screw on lateral radiogram, which should be a new intraoperative landmark for screw insertion, in place of the anterior arch of C1.