Assisted full-endoscopic spine surgery for lumbar spinal stenosis: Technical note and learning curve
Lumbar spinal stenosis (LSS) causes disabling back and radicular pain. Full-endoscopic spine surgery offers minimally invasive decompression, but uniportal and biportal approaches have limitations. Assisted full-endoscopic spine surgery (AFESS) combines the advantages of both techniques to enhance decompression while preserving facet joints.
Source: Brain and Spine

