Here are links to articles that I find relevant to the current state of endoscopic spine surgery
Dutch endoscopic non-inferiority trial of endoscopic versus microsurgical discectomy from the British Medical JournalMedial Branch Transection
Endoscopic medial branch transection history and review World Neurosurgery 2022Ruetten and Komp Opus
Ruetten and Komp 463 Uniportal Transforaminal cases. Spine 2005Ruetten and Komp, degenerative central stenosis treated endoscopically. 74 patients, 2 year resultsRuetten and Komp stenosis RCT: endoscopic versus microsurgical technique. 135 patients, 2 year resultsRuetten and Komp, posterior cervical foraminotomy. Ruetten and Komp, endoscopic facet cyst excisionRuetten and Komp, endoscopic thoracic discectomy. 26 patients