نتایج جستجو برای: longitudinal re
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Cervical laminectomy has been known to cause postlaminectomy kyphosis and instability, often necessitating extensive anterior and posterior procedures with instrumentation for the stabilisation and correction of the deformity. We report a case of spontaneous stabilisation of postlaminectomy cervical kyphosis by anterior longitudinal ossification in the absence of an ossified posterior longitudi...
The longitudinal re-acceleration phenomenon of the fragmentation residues, as found recently in projectile fragmentation of uranium [1,2], has been interpreted [3] as the postulated spectator response to the participants’ blast [4]. According to transport calculations, the longitudinal momenta of the surviving residues yield a direct access to the momentum-dependent properties of the nuclear me...
A model-free theoretical framework for a phenomenological description of spin-lattice relaxation by anomalous translational diffusion in inhomogeneous systems based on the fractional diffusion equation is developed. The dependence of the spin-lattice relaxation time on the size of the pores in porous glass Vycor is experimentally obtained and found to agree well with our theoretical predictions...
Citation Kobashi Y, Munetomo Y, Baba A, Yamazoe S, Mogami T. Evaluation of the ossification of the cervical posterior longitudinal ligament utilizing Xray, CT and MR imaging. Orthop Res Traumatol Open J. 2017; 2(1): 35-39. doi: 10.17140/ORTOJ-2-109 Volume 2 : Issue 1 Article Ref. #: 1000ORTOJ2109 Evaluation of the Ossification of the Cervical Posterior Longitudinal Ligament Utilizing X-Ray, CT ...
We report 2 cases of acute, progressive myelopathy after a fall in elderly patients who had a retroodontoid pseudotumour and extensive ossification of the anterior longitudinal ligament.
Dr. Twomey showed us, through meticulous dissections that the conventional model of a disc bulging out against a nerve root is not only very unlikely, but that mechanical compression of a nerve only produces paresthesia and numbness. Discs do bulge, but is usually contained within/around the posterior longitudinal ligament. Furthermore a mechanical model that teaches a disc pushes against a ner...
Cf = skin friction coefficient CD = drag coefficient CDf = friction drag coefficient CDp = pressure drag coefficient h = step height M0 = freestream Mach number Patm = atmospheric pressure Pi = stagnation pressure Re = freestream Reynolds number Ti = stagnation temperature U = velocity U = normalized velocity Uτ = friction velocity X = longitudinal coordinate Z = vertical coordinate Z = normali...
Study Design Retrospective study. Objective Minor trauma, even from a simple fall, can often cause cervical myelopathy, necessitating surgery in elderly patients who may be unaware of their posterior longitudinal ligament ossification (OPLL). The aim of this study is to determine the influence of trauma on the neurologic course in patients who have undergone surgery for cervical OPLL. Methods P...
PURPOSE To investigate the MR appearance of ossification of the posterior longitudinal ligament (OPLL) of the cervical spine. MATERIALS AND METHODS A retrospective review of MR images and conventional tomograms in 147 patients. RESULTS In the sagittal plane, proton-density images identified the ossified lesions more clearly than did T1- and T2-weighted images. All axial sequences identified...
OBJECT Ossification of the posterior longitudinal ligament (OPLL) can result in significant myelopathy. Surgical treatment for OPLL has been extensively documented in the literature, but less data exist on conservative management of this condition. METHODS The authors conducted a systematic review to identify all reported cases of OPLL that were conservatively managed without surgery. RESUL...
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