Yoshio Shimamura

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STUDY DESIGN An ovine model of discitis was used to determine the efficacy of the antibiotic cephazolin for prophylactic use in spinal surgery. OBJECTIVES To determine in juvenile and adult sheep spines if 2-g cephazolin given at intervals over a 4-hour period would prevent iatrogenic discitis, and determine the concentration of cephazolin in nucleus and(More)
BACKGROUND Previous studies have demonstrated the safe passive range of ankle motion for inter-bone stiffness after internal fixation under load but there is a lack of information about the safe range of ankle motion for early rehabilitation in the absence of loading. The present study was designed to assess the effect of ankle movement on inter-bone(More)
Pure dislocation injuries resulting from severe trauma at the occipito-atlantoaxial junction most commonly result in death. Either the medulla oblongata or the spinomedullary junction may be severed. It is commonly believed that full-face helmets are protective during a motorcycle accident. However, previous reports have suggested that full-face helmets(More)
A 50-year-old male presented with a large mass involving the left third rib following more than 30 years of a slow growing asymptomatic swelling in the chest wall. Computerised tomography (CT) scan showed a mass 7 × 10 cm expanding the left third rib and having a sclerotic outer margin which showed discontinuity and raising the possibility of malignancy(More)
A 34-year-old male, who presented with mild upper back pain of recent onset was discovered to have a large intrathoracic mass, which was in continuity with tumour which had extensively destroyed the T5 and T6 vertebrae. Microscopy of an aspirated pleural effusion unexpectedly revealed many large multinucleated giant cells and the subsequent needle biopsy(More)
STUDY DESIGN An in vivo study of material from a potential disc prosthesis. OBJECTIVE To examine the histopathologic effect of particulate debris on the dura and neural tissue in sheep. SUMMARY OF BACKGROUND DATA Disc prostheses are emerging as alternatives to spinal fusion for the treatment of symptomatic degenerative lumbar disc disease. Preclinical(More)
Calcification around the cervical spine is thought to be relatively rare case, among these conditions the calcification at the longus colli muscle is called retropharyngeal tendinitis and only several cases were reported in the literature. In this disease, the three characteristic clinical features are acute severe posterior neck pain without any trigger,(More)
A longitudinal fracture of the sacrum without an associated neurological deficit was described. A 47-year-old man was involved in a motor vehicle crash, suffering from multiple injures including a vertical displaced fracture of the sacrum unassociated with neurological deficit, fracture of the pelvis, and second lumbar burst fracture. A three-dimensional(More)
We present three cases of cervical spinal fracture, involving two columns without an obvious neurological deficit. Usually if two of three columns are fractured, the injury is considered unstable structurally and clinically. Fortunately our cases did not involve sensory or motor impairment because of an enlargement of the spinal canal.