Radiculopathy Caused by Osteoporotic Vertebral Fractures in the Lumbar Spine
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概要
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The clinical features of radiculopathy caused by osteoporotic vertebral fractures (OVFs) in the lumbar spine were investigated in 66 patients treated for pain caused by OVFs from January 2006 to December 2009. Ten of the patients complained of persistent radiculopathy. The cause of radiculopathy was initially diagnosed as lumbar canal stenosis (LCS) in seven patients, lumbar foraminal stenosis (LFS) in two, and both in one. One patient with LFS had reduced pain with conservative treatment, and the other nine needed surgical treatments. LCS was treated with posterior decompression, and LFS complicated with LCS at the same spinal level was treated with posterior lumbar interbody fusion (PLIF). Vertebroplasty was performed for one patient with LFS to attain indirect nerve root decompression achieved as a result of vertebral reconstruction and stabilization. Four of the patients treated with posterior decompression for LCS suffered from residual radiculopathy postoperatively, which was caused by LFS at the same level or the level below the treated level. Two patients underwent second operative procedure (PLIF) for recurrent radiculopathy. The Japanese Orthopedic Association and Visual Analogue Scale scores of the pain improved after operations, but the scores of the patients treated without spinal fusion gradually worsened during the follow-up period, whereas the scores of the patients treated with PLIF remained stable at various levels. Seven of the ten patients developed LFS following OVF, suggesting that radiculopathy following OVF involves LFS with high frequency.
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