腰椎変性側彎症に対し左右で径の異なる threaded fusion cage を用いた 1 例

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The threaded Fusion Cage (TFC) is a very useful device to eliminate spinal segmental instability and restore disc height. We report here that TFC is also very useful for treating degenerative lumbar scoliosis. A 48 year-old woman had been suffering from pain in the left lower extremity for thirteen years. She finally became unable to walk because of increasing pain during the previous eight months. She had degenerative lumbar scoliosis at L4-L5 and hypolordotic spine with congenital thoracic scoliosis. The degenerative lumbar scoliosis consisted of disc degeneration and difference in the height of the right and left sides of the vertebral body. Decompression and posterior lumbar interbody fusion with two different-sized TFCs at L4-L5 were carried out. Twenty-one days after surgery, the pain in the left lower extremity disappeared and she became able to walk by herself. Postoperative roentgenograms showed that the degenerative lumbar scoliosis had disappeared, but that the tilt of the lumbar spine compensated for the thoracic scoliosis had not been corrected. At the follow-up 10 months after surgery, she was asymptomatic and solid fusion was radiologically observed on flexion as well as on extension of the lumbar spine. This case shows that placing two cages of different size in a single space is very useful for acquiring tight fusion and restoring the alignment of the lumbar spine when there is a difference in the height of the right and left sides of the vertebral body.
日本脊髄外科学会の論文
2000-02-29

腰椎変性側彎症に対し左右で径の異なる threaded fusion cage を用いた 1 例

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