Ultrasound guidance for transforaminal percutaneous endoscopic lumbar discectomy may prevent radiation exposure: A case report

Figure 5 Percutaneous endoscopic lumbar discectomy for lumbar disc herniation at two levels. A: Partial hypertrophied facetectomy was performed using a 3.0-mm endoscopic lateral bur; B: Percutaneous endoscopic lumbar discectomy was performed for lumbar disc herniation at two levels at the same time; C: Direct visualization of the blue dye in the protruding intervertebral disc through the endoscope; D: The protruding intervertebral disc was removed to decompress the spinal nerve.