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Percutaneous endoscopic lumbar foraminotomy technique can be summarized into three steps: an extraforaminal landing under fluoroscopic control; endoscopic foraminal unroofing; and sophisticated, full-scale foraminal decompression.
This video has been taken from Percutaneous Endoscopic Lumbar Foraminotomy: An Advanced Surgical Technique and Clinical Outcomes, an article that can be read here http://bit.ly/1o65gdG. It was submitted by corresponding author Yong Ahn, M.D., Ph.D. from the Department of Neurosurgery at Wooridul Spine Hospital in Seoul, Korea.