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We carried out two-bundle reconstruction of the anterior cruciate ligament (ACL) using multi-strand semitendinosus tendon for the purpose of getting better stability under aggressive rehabilitation by putting the graft in the normal anatomy with minimized notch-plasty. The drill guide position was determined using two-directional radiography in(More)
It has been suggested that matrix metalloproteinase-3 (MMP-3, stromelysin-1) has an important role in the degeneration of intervertebral discs (IVDs). A human MMP-3 promoter 5A/6A polymorphism was reported to be involved in the regulation of MMP-3 gene expression. We suggest that IVD degeneration is associated with 5A/6A polymorphism. We studied 54 young(More)
STUDY DESIGN Dynamic lumbar flexion-extension motion was assessed by videofluoroscopy. OBJECTIVES To identify the motion patterns of the whole lumbar spine in normal subjects and in patients with low back pain or spondylolisthesis during actual movement. SUMMARY OF BACKGROUND DATA Assessment of lumbar instability on terminal radiographs is(More)
STUDY DESIGN A clinical prospective study. OBJECTIVE To assess whether clinical and radiologic outcomes differ between anterior decompression and fusion (ADF) and laminoplasty (LAMP) in the treatment of cervical spondylotic myelopathy (CSM). SUMMARY OF BACKGROUND DATA No reports to date have accurately and prospectively compared middle-term clinical(More)
STUDY DESIGN Prospective, comparative clinical study. OBJECTIVE To compare the clinical outcome of anterior decompression and fusion with floating method and laminoplasty in the treatment of cervical myelopathy caused by ossification of the posterior longitudinal ligament (OPLL). SUMMARY OF BACKGROUND DATA There have been no reports that have accurately(More)
STUDY DESIGN A retrospective study of cervical disc herniation using results of repeated magnetic resonance imaging examinations. OBJECTIVES To clarify the cervical disc herniation morphological changes over time in order to establish a strategy for treatment. SUMMARY OF BACKGROUND DATA In the authors' previous magnetic resonance imaging follow-up study(More)
Vestibular inputs to the cerebral cortex are important for spatial orientation, body equilibrium, and head and eye movements. We examined vestibular input to the periarcuate cortex in the Japanese monkey by analyzing laminar field potentials evoked by electrical stimulation of the vestibular nerve. Laminar field potential analysis in the depths of the(More)
Dissociated motor loss due to cervical spondylosis and disc herniation was evaluated in 10 patients who presented with left deltoid paresis in the absence of sensory deficits or myelopathy. All of these cases underwent cervical anterior decompression. Based on magnetic resonance imaging, computed tomography myelography, and computed tomography discography,(More)
STUDY DESIGN The present study retrospectively investigated the morphologic changes that occurred during conservative treatment of patients with unilateral leg pain resulting from herniated nucleus pulposus without significant lumbar canal stenosis. OBJECTIVES The results were correlated with clinical outcomes and extruding forms to determine which type(More)
Several reports describe that the explant culture of the trabecular bone after collagenase treatment produces mesenchymal stem cells (MSCs). However, the suspended cells had not been intensively examined concerning MSCs. We hypothesized that the cells would acquire the properties of MSCs during their expansion and therefore compared them with marrow(More)