李振宙 侯树勋
Conventional open discectomy is a standard surgical method for lumbar disc herniation. But iatrogenic injury to paraspinal muscle and facet joint may cause postoperative chronic low back pain and segamental instability, which can lead to reoccurence of lumbar disc herniation. Epidural scarr fomation arised from flavum resection in open discectomy is inavoidable with 10% of it leading to failed back sugery syndrome. Transforaminal endoscopic discectomy can be performed without iatrogenic injury to paraspinal muscle, facet joint and flavum ligament. Foraminoplasty is a technique that enlarge the low part of intervertebral foramen with different tools so that working channel and endoscope can be introduced into epidural space anterior to dura sac where protruted disc tissue can be targeted resected and nerve root complete decompressed. It can be treated as an alternative surgical technique for lumbar disc herniation.
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