A one-step foraminoplasty via a large trephine in percutaneous endoscopic transforaminal discectomy for the treatment of lumbar disc herniation
Fig 4
(A) Preoperative MRI showed the disc prolapse at the L4-L5 level. (B) Intraoperative anteroposterior and lateral fluoroscopy on the working cannula. (C) Postoperative MRI showed the complete removal of the protruded nucleus pulposus.