Masaya Yazu

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Pedicle screw instrumentation has become increasingly popular for rigid internal stabilization of the thoracolumbar spine. However, when pedicle screws are used in elderly osteoporotic patients, the screw-bone interface is stripped easily. Therefore, the risk of screw loosening and backing-out after surgery has increased. The purpose of this study was to(More)
Kyphoplasty and vertebroplasty with polymethylmethacrylate (PMMA) have been used for the treatment of osteoporotic vertebral compression fractures. We performed kyphoplasty and vertebroplasty with alpha-tricalcium phosphate cement (CPC) and PMMA to compare the biomechanical properties. Thirty osteoporotic vertebrae were harvested from nine embalmed(More)
PURPOSE To determine directly the minimal distance between two ssbs on complementary strands in circular DNA that are not observed as a dsb by electrophoresis. MATERIALS AND METHODS 3.2 kbp DNAs with cohesive overhangs of various lengths were systematically generated by a newly devised method and electrophoresed in agarose slabs. RESULTS At 4 degrees C,(More)
A patient with trimalleolar ankle fracture was preoperatively diagnosed with deep vein thrombosis (DVT); after induction of general anesthesia, a temporary inferior vena cava filter (TIVCF) was intraoperatively placed by an anesthesiologist. This contributed to safe anesthesia management. A 65-year-old woman was scheduled to undergo surgery for a(More)
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