Fig. 2

AUSS-TLIF surgical procedure. (a) Schematic diagram of the AUSS-TLIF procedure; (b) Preoperative fluoroscopy to identify the intervertebral space to be fused; (c) Intraoperative relationship between various instruments; (d) Insertion of the interbody fusion cage under endoscopic guidance; (e) Postoperative fluoroscopy to confirm the appropriate positioning of the interbody fusion cage and pedicle screws