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  • 75.30  (1)
  • Disc space narrowing  (1)
  • Forestier's disease  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Radiographic evaluation of the lumbosacral disc height (1999)
    Springer
    Skeletal radiology 28 (1999), S. 638-643 
    Details
    ISSN: 1432-2161
    Schlagwort(e): Key words Lumbar spine ; Disc space narrowing ; Radiographs ; Disc degeneration ; Instability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Objective. To establish criteria for the radiographic evaluation of narrowing of the L5–S1 disc height, which varies widely with transition of the L5 vertebra. Design and patients. Nondegenerated disc heights of L3–4 to L5–S1 and the thickness and length of the L5 transverse process were measured on plain radiographs of the lumbar spine in 166 outpatients, aged 18–35 years (mean 26.3 years), in whom at least the L3–4 and L5–S1 discs both showed normal signal intensity on magnetic resonance imaging. The level of the iliac crest was recorded semiquantitatively. The disc height was expressed as a percentage of the L3–4 disc height, namely ”relative disc height”. The ratio of disc height to the sagittal diameter of the overlying vertebral body was termed the ”disc height index”. Results and conclusion. The relative disc height and disc height index of L5–S1 showed strong negative correlations with two anatomic variables, which were the relative thickness of the transverse process and the level of the iliac crest (P〈0.0001). The results of linear regression analysis suggest that narrowing of the L5–S1 disc height can be evaluated on plain radiographs alone in relation to these anatomic variables.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002560050566
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Long term follow-up of diffuse idiopathic skeletal hyperostosis in the cervical spine (1991)
    Springer
    Neuroradiology 33 (1991), S. 427-431 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Air way obstruction ; Cervical spine ; Diffuse idiopathic skeletal hyperostosis ; Dysphagia ; Forestier's disease
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In eleven patients with diffuse idiopathic skeletal hyperostosis who presented with extensive ossification in the cervical spine, progression or regression of ossification during the follow-up period were measured in extent and thickness radiographically. Intervertebral range of motion was also measured and the relation between changes of ossification and intervertebral mobility was analyzed. The range of motion at the segments at which ossification progressed was statistically quite different from those at which no progression was observed. It was found that ossification grew in thickness at mobile segments and no growth of ossification was present at immobile segments. Dysphagia caused by massive ossification was cured by surgical removal in two cases. Recurrent ossifications were detected in them some years after surgery, and one of them complained of dysphagia again. To prevent recurrent ossification and dysphagia, it was considered that immobilization of the concerned segment was necessary by bone grafting or preservation of the continuity of ossification.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00598618
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  • 3
    Digitale Medien
    Digitale Medien
    Ribbon-form Sendust alloy made by rapid quenching methods (1980)
    Springer
    Applied physics 21 (1980), S. 335-338 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 75.30
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Ribbon-form Sendust was prepared by a roll quenching method. The size of the ribbon was 20∼110 μm thick, 2∼8 mm wide and 5∼10 m long. The normal direction of the ribbon plane was parallel to the [100] as well as the [110] axes, and no preferential directions exist within the ribbon plane. Vickers hardnessH v of the as-prepared ribbon was 563±7, decreased with increasing the annealing time and became almost constant. The minimum bending diameter of the as-prepared ribbon was 8 mm and increased gradually with increase of the annealing time. Initial permeability of the 84.80 Fe·9.50 Si·5.70 Al ribbon was about 34,000 in the frequency range from 1 to 3kHz and decreased to be 10,000 at 85 kHz. The permeability of the molded core in a resin was about 21,000 in the frequency range from 1 to 3 kHz.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00895924
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