1997 年 11 巻 2 号 p. 111-116
The classification codified during the International Symposium on Lumbar Canal Stenosis (Canada, 1975) have been a source of confusion amongst the neurosurgical community. The present study was initiated to clearly define the concept of lumbar canal stenosis starting with a reexamination of the original usage of the term by Verbiest. Also introduced are surgical techniques for the relief of lumbar canal stenosis and for disc excision in pure lumbar disc herniation. In our clinic, the determination of the appropriate surgical procedure is based upon the following criteria : 1) Laminectomy ; when 3 or more vertebral bodies exhibit stenosis. 2) Partial Laminectomy ; when localized stenosis is present. 3) Discotomy ; in case of pure disc herniation. 4) Full/Partial Laminectomy+Discotomy; canal stenosis with herniation. 5) Foraminotomy (unroofing of the lateral recess); superior facet syndrome.