神経根型腰部脊柱管狭窄症におけるMRミエログラフィーによる神経根圧迫形態の評価  [in Japanese] Compression patterns of nerve root on magnetic resonance myelogram in patients with lumbar spinal canal stenosis  [in Japanese]

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Abstract

神経根型腰部脊柱管狭窄症における神経組織の圧迫部位,圧迫形態,圧迫部位と椎間板との相対的位置関係をMRミエログラフィーで検討した.2003年4月から2008年7月までにMRミエログラフィーを撮像した椎間孔狭窄以外の神経根型腰部脊柱管狭窄症の48例を対象とした. 平均年齢は68.2歳,男性25例,女性23例であった.障害神経根は65根(L3 : 1,L4 : 10,L5 : 46,S1 : 8)であった.圧迫部位は全例椎間板高位に一致していた.圧迫部位は硬膜部が8根(L3 : 1,L4 : 5,L5 : 2,S1 : 0),硬膜管からの神経根の分岐部が57根(L3 : 0,L4:5,L5:44,S1 : 8)であった.圧迫部位に神経根の内方化を伴うものは30根(L3 : 0,L4 : 1,L5 : 25,S1 : 4)であり,内方化を伴わない外側陥凹部で前方方向の圧迫が35根(L3 : 1,L4 : 9,L5 : 21,S1 : 4)であった.

Radicular pain can occur in either subarticular entrapment in the lateral recess or central stenosis. Because many central stenosis patients were associated with subarticular entrapment, the incidence of subarticular entrapment as a cause of radicular pain has not yet been elucidated. Magnetic resonance myelography (MRM) can differentiate subarticular entrapment from central stenosis by visualization of the nerve root in the distal portion of compression. In the present study, morphologies of the root sleeve in patients with painful radiculopathy due to spinal canal stenosis were determined on MR myelograms. Of 65 affected nerve roots in 48 consecutive patients (M/F = 25/23, mean age = 68.2 years), 35 nerve roots showed purely antero-posterior compression (subarticular entrapment) and 30 nerve roots showed medial deviation. The site of compression was classified as above (8) or at the exit of the root sleeve from the dural tube (57).

Journal

  • The Journal of Japanese Society of Lumbar Spine Disorders

    The Journal of Japanese Society of Lumbar Spine Disorders 15(1), 117-121, 2009

    The Japanese Society of Lumbar Spine Disorders

Codes

  • NII Article ID (NAID)
    130000152039
  • NII NACSIS-CAT ID (NCID)
    AA11488721
  • Text Lang
    JPN
  • ISSN
    1345-9074
  • NDL Article ID
    10487523
  • NDL Source Classification
    ZS35(科学技術--医学--外科学・整形外科学・麻酔学)
  • NDL Call No.
    Z19-B834
  • Data Source
    NDL  J-STAGE 
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