Learning Curve and Clinical Outcome of Biportal Endoscopic-Assisted Lumbar Interbody Fusion

Figure 2

Bone graft and cage insertion. (a) A funnel is used to insert bone graft inside the disc space. (b) Posteroanterior fluoroscopic view of the funnel positioned inside the disc space. (c) Cage inserted under endoscope guidance. (d) Lateral fluoroscopic view during the cage insertion.

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