Fig. 2From: Microendoscopy-assisted extraforaminal lumbar interbody fusion for treating single-level spondylodesisFluoroscopic images during surgery. a A tubular retractor with a microendoscope installed posterolaterally on the anteroposterior view. Four percutaneous pedicle screw guide wires were already placed in the pedicles. b Approach to the disc on the lateral view. c The disc space was cleaned and prepared for cage insertion on the lateral viewBack to article page