Gil,
Don't know if u have made enquiry here.
Selective Endoscopic Discectomy™
Mark rates them very highly. I like the idea of keyhole and visual approach. Combined with biologic treatment for regenerating nucleus and healing annulus would be the ultimate treatment.
Tony or Chris Yeung... DISC - Desert Instititute for Spine Care, The Leaders in Minimally Invasive Endoscopic Laser Spine Surgery...."advances in endoscopic surgical technique has allowed for successful endoscopic treatment of conditions such as Failed Back Surgery Syndrome caused by recurrent disc herniation, lateral recess stenosis, foraminal osteophytes, facet cysts, and many degenerative conditions of the lumbar spine such as degenerative and isthmic spondylolisthesis. Where the patho-anatomy can be accessed through the foraminal approach, treatment options may be possible. Biologics are also being considered for tissue healing and regeneration."