World Neurosurg
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Initial clinical presentation of dural arteriovenous fistula (DAVF) with predominantly thalamic symptoms is rare and has not been reported until now. ⋯ DAVF presenting with recurrent predominantly thalamic symptoms is rare. Atypical transcortical aphasia rather than fluent aphasia is an unusual clinical manifestation of thalamic pathology and could result from the involvement of specific thalamic nuclei. Preferential high flow into BVR in the presence of venous anomalies could potentially induce architectural weakness of the venous wall and precipitate aneurysm formation. Embolization of the DAVF can potentially reverse this unusual neurologic condition.
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The objective of this work is to report the feasibility and results of an institutional protocol for the application of an innovative biologically active hemoderivative autologous material, denominated leukocyte- and platelet-rich fibrin (L-PRF), in the reconstruction of endoscopic approaches to the sellar region. ⋯ L-PRF membranes offer characteristics that are superior to other techniques and products, mainly because of their role as biological promoters of tissue regeneration, their low economic cost, and immediate availability. However, it would be necessary to confirm these results in studies involving more patients.
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We sought to describe a novel modified guidewire technique used in the placement of percutaneous pedicle screws (PPSs), which enables safe and precise control of the depth of screw placement and prevents excessive advancement of the guidewire with low radiation exposure. PPSs have been widely used and have many advantages. However, inadvertent advancement of the guidewire may damage peripheral tissue or viscera, and repeated confirmation of the depth of screw and guidewire leads to extensive radiation exposure. ⋯ The modified guidewire with markers is an effective device to precisely control the depth of PPSs and prevent complications of the guidewire in the placement of pedicle screws.
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To compare the clinical and radiographic outcomes on the sagittal plane between anterior and posterior selective fusion (ASF and PSF) in patients with Lenke 5 adolescent idiopathic scoliosis (AIS) for a minimum of 5 years of follow-up. ⋯ A significant and continuous loss of lordosis in ISA was observed after ASF in patients with Lenke 5 AIS. A larger LL was obtained with a higher incidence of proximal junctional kyphosis at long-term follow-up after PSF.
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To evaluate the safety and accuracy of anatomic- and lateral fluoroscopic-guided placement of C2 pars/pedicle, C1 lateral mass screws, and freehand placement of C2 laminar screws. ⋯ Anatomic and lateral fluoroscopic-guided placement of C2 pars/pedicle screws and C1 lateral mass screws and freehand placement of C2 laminar screws is extremely safe.