Keisuke Masuda

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Quantitative ultrasound (QUS) teehnology for the assessment of bone status has progressed rapidly over the last 10 years, and eome into wide use within a relatively short time period, sinee the deviees are less expensive and simpler than X-ray densitometrie machines, portable and involve no radiation exposure. In addition, it is antieipated that QUS may(More)
OBJECTIVE Transplantation of bone marrow stromal cells (BMSCs) is a theoretical potential as a therapeutic strategy in the treatment of spinal cord injury (SCI). Although a scaffold is sometimes used for retaining transplanted cells in damaged tissue, it is also known to induce redundant immunoreactions during the degradation processes. In this study, the(More)
STUDY DESIGN A retrospective study. OBJECTIVE The aim of this study was to determine the incidence of increased segmental range of motion (ROM) after laminoplasty and to clarify whether increased ROM is associated with spondylolisthesis. Finally, we explored the effect of increased segmental ROM on clinical results. SUMMARY OF BACKGROUND DATA Cervical(More)
STUDY DESIGN Case-control study. PURPOSE To identify the characteristics of candidate indexes for early detection of surgical site infection (SSI). OVERVIEW OF LITERATURE SSI is a serious complication of spinal instrumentation surgery. Early diagnosis and treatment are crucial for the welfare of the patient postoperation. METHODS We retrospectively(More)
BACKGROUND CONTEXT During spine surgery, the spinal cord is electrophysiologically monitored via transcranial electrical stimulation of motor-evoked potentials (TES-MEPs) to prevent injury. Transcranial electrical stimulation of motor-evoked potential involves the use of either constant-current or constant-voltage stimulation; however, there are few(More)
STUDY DESIGN A case-control study. OBJECTIVE The objective of this study is to identify biochemical markers for surgical site infection (SSI) in posterior instrumented spinal fusion that are not affected by operative circumstances and to determine diagnostic cutoffs for these markers. SUMMARY OF BACKGROUND DATA Numerous biochemical markers may be used(More)
STUDY DESIGN Case control study. PURPOSE To identify the most significant laboratory marker for early detection of surgical site infection (SSI) using multiple logistic regression analysis. OVERVIEW OF LITERATURE SSI is a serious complication of spinal instrumentation surgery. Early diagnosis and treatment are crucial. METHODS We retrospectively(More)