Seventy-three patients with highly migrated intracanal disc herniations were randomized to receive a minimal incision, multifidus-sparing microendoscopic discectomy (n=37) or a conventional open discectomy (n=36). Outcomes of interest included surgical outcomes, pain on a Numeric Rating Scale (NRS), function on the Oswestry Disability Index (ODI), and the rate of complications, assessed up to 2 ye...