A one-step foraminoplasty via a large trephine in percutaneous endoscopic transforaminal discectomy for the treatment of lumbar disc herniation
Fig 2
(A) The anteroposterior fluoroscopy after placing the puncture needle. (B) The lateral fluoroscopy after placing the puncture needle. (C) The fluoroscopy after placing the primary guide rod. (D) The fluoroscopy after placing the tongue-shaped protective sheath. (E) The anteroposterior fluoroscopy after placing the working cannula. (F) The lateral fluoroscopy after placing the working cannula.