fig3

Figure 3. Intraoperative endoscopic images (left side approached percutaneous endoscopic lumbar laminectomy). A: Contralateral view. Right side is the caudal of the patient. Triangle: facet joint (already drilled out) of right side; dot: right side L5 nerve root. B: Ipsilateral view. Left side of the figure is the caudal of the patient and lower side is the left side of the patient. Triangle: residual superior facet which medial side was drilled out to decompress the L5 root; dot: left L5 root