Takayoshi Ueta

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The aim of this study is to establish standard MRI values for the cervical spinal canal, dural tube, and spinal cord, to evaluate age-related changes in healthy subjects, and to assess the prevalence of abnormal findings in asymptomatic subjects. The sagittal diameter of the spinal canal and the sagittal diameter and cross-sectional area of the dural tube(More)
STUDY DESIGN A cross-sectional study was performed to elucidate the usefulness of a new clinical evaluation, and a prospective study was performed to detect hysterical paralysis using this evaluation method. OBJECTIVES To make a correct diagnosis of hysterical paralysis, a new clinical evaluation was developed. SUMMARY OF BACKGROUND DATA Hysterical(More)
We determined the incidence of and risk factors for clinical adjacent segment pathology (C-ASP) requiring additional surgeries among patients previously treated with one-segment lumbar decompression and fusion surgery. We retrospectively analysed 161 consecutive patients who underwent one-segment lumbar decompression and fusion surgery for L4 degenerative(More)
STUDY DESIGN A retrospective, consecutive case series. OBJECTIVE To determine the risk factors that have a statistically significant association with the need of tracheostomy in patients with cervical spinal cord injury (CSCI) at the acute stage. SUMMARY OF BACKGROUND DATA Respiratory complications remain a major cause of further morbidity and mortality(More)
STUDY DESIGN A multicenter prospective study comparing the neurological outcome of patients treated by surgical intervention versus conservative treatment for cervical spinal cord injury (CSCI) without bone and disc injury. OBJECTIVE To evaluate the neurological outcome of decompression surgery for CSCI without bone and disc injury in patients with spinal(More)
STUDY DESIGN Retrospective outcome measurement study. OBJECTIVES The purpose of this study is to assess whether ossification of the posterior longitudinal ligament (OPLL) affects neurologic outcomes in patients with acute cervical spinal cord injury (SCI). SUMMARY OF BACKGROUND DATA There have so far been few reports examining the relationship between(More)
This study aimed to establish radiographic standard values for cervical spine morphometry, alignment, and range of motion (ROM) in both male and female in each decade of life between the 3rd and 8th and to elucidate these age-related changes. A total of 1,230 asymptomatic volunteers underwent anteroposterior (AP), lateral, flexion, and extension radiography(More)
STUDY DESIGN A retrospective imaging and clinical study. OBJECTIVE To evaluate the extraneural soft-tissue damage and its clinical relevance in patients with traumatic cervical spinal cord injury (SCI) without major bone injury. SUMMARY OF BACKGROUND DATA To date, various kinds of cervical discoligamentous injuries have been demonstrated on magnetic(More)
STUDY DESIGN Cross-sectional study. OBJECTIVE The purpose of this study was to determine the prevalence and distribution of abnormal findings on cervical spine magnetic resonance image (MRI). SUMMARY OF BACKGROUND DATA Neurological symptoms and abnormal findings on MR images are keys to diagnose the spinal diseases. To determine the significance of MRI(More)
STUDY DESIGN A retrospective, consecutive case series. OBJECTIVE To determine the risk factors that have a significant correlation with the severity of neurologic impairment in thoracolumbar and lumbar burst fractures. SUMMARY OF BACKGROUND DATA The correlation between spinal canal stenosis due to bony fragments and the severity of neurologic deficits(More)