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Article
Open AccessComparison of pedicle screw placement accuracy between two types of imaging support (Artis Zeego versus two-dimensional fluoroscopy): a cross-sectional observational study
The pedicle screw system is widely used in spine surgery, and it provides rigid fixation and leads to successful subsequent deformity correction and bony fusion. The standard imaging technique for pedicle scre...
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Article
Radiological features of cervical spine in dropped head syndrome: a matched case–control study
Dropped head syndrome (DHS) is presumably caused by focal myopathy in the cervical posterior muscles; however, distinguishable radiological features of the cervical spine in DHS remain unidentified. This study...
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Article
Open AccessThe effect of denosumab on pedicle screw fixation: a prospective 2-year longitudinal study using finite element analysis
Pedicle screw loosening is a major complication following spinal fixation associated with osteoporosis in elderly. However, denosumab is a promising treatment in patients with osteoporosis. The effect of denos...
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Article
Open AccessImpact of Spinopelvic sagittal alignment on the surgical outcomes of dropped head syndrome: a multi-center study
Most of the previous studies about the surgical treatment of dropped head syndrome (DHS) are small case series, and their primary outcome measures were cervical alignment parameters. Therefore, little is known...
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Article
Open AccessAssociations between sarcopenia and degenerative lumbar scoliosis in older women
Age-related sarcopenia can cause various forms of physical disabilities. We investigated how sarcopenia affects degenerative lumbar scoliosis (DLS) and lumbar spinal canal stenosis (LSCS).
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Article
Direct Imaging Mass Spectrometry of Plant Leaves Using Surface-assisted Laser Desorption/Ionization with Sputterdeposited Platinum Film
Plant leaves administered with systemic insecticides as agricultural chemicals were analyzed using imaging mass spectrometry (IMS). Matrix-assisted laser desorption/ionization (MALDI) is inadequate for the det...
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Article
In-vivo transfection of the proopiomelanocortin gene, precursor of endogenous endorphin, by use of radial shock waves alleviates neuropathic pain
Neuropathic pain is difficult to control and patient response to current treatment is often inadequate. Opioids have been widely used to treat a variety of pain states, but have several side effects. Endogenou...
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Article
L5 spinal nerve injury caused by misplacement of outwardly-inserted S1 pedicle screws
To evaluate L5 nerve root injuries caused by outwardly misplaced S1 pedicle screws.
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Article
Open AccessPostoperative lumbar spinal stenosis after intertransverse fusion with granules of hydroxyapatite: a case report
In the present case of postoperative lumbar spinal stenosis after non-instrumented intertransverse fusion with granules of hydroxyapatite (HA), bone union was not completed and the patient felt the recurrence ...
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Article
Evaluation of low back pain using the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire for lumbar spinal disease in a multicenter study: differences in scores based on age, sex, and type of disease
The Japanese Orthopaedic Association (JOA) has investigated the JOA Back Pain Evaluation Questionnaire (JOABPEQ) to evaluate several aspects of low back pain in patients. The score includes five categories (25...
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Article
Up-regulation of TNFα in DRG satellite cells following lumbar facet joint injury in rats
The rat L5/6 facet joint, from which low back pain can originate, is multisegmentally innervated from the L1 to L5 dorsal root ganglia (DRG). Sensory fibers from the L1 and L2 DRG are reported to non-segmental...
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Article
Characteristics of sensory DRG neurons innervating the lumbar facet joints in rats
The rat L5/6 facet joint, from which low-back pain can originate, is multisegmentally innervated from the L1 to L5 dorsal root ganglions (DRGs). Sensory fibers from the L1 and L2 DRGs are reported to non-segme...
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Article
Severe lumbar retrospondylolisthesis associated with hemodialysis in a patient with chronic renal failure: a case report
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Article
Insertional torque of the lumbar pedicle screw during surgery
The purposes of this study were to determine if the intraoperative insertional torque of pedicle screws correlates with the degree of osteoporosis and if insertional torque can be used as a predictor of screw ...
