497 - Fully Endoscopic Lumbar Interbody Fusion Using a Percutaneous Biportal...

General Session: Endoscopic Surgery

Presented by: D.H. Heo


D.H. Heo(1), C.K. Park(1)

(1) The Leon Wiltse Memorial Hospital, Suwon, Korea, Republic of


Background: Minimally invasive spine surgery can minimize damage to normal anatomical structures. Recently, fully endoscopic spine surgeries have been attempted for lumbar fusion surgery. In this study, the authors performed a percutaneous biportal endoscopic technique as a minimally invasive surgery for lumbar fusion. The purpose of this study is to present the percutaneous biportal endoscopic technique of fully endoscopic lumbar interbody fusion and to analyze the clinical results.

Methods: Patients who were to undergo single-level fusion surgery from L3-4 to L5-S1 were enrolled. Two channels (endoscopic portal and working portal) were used for endoscopic lumbar fusion surgery. All patients underwent follow-up for more than 12 months. Demographic characteristics, diagnosis, operative time, and estimated blood loss were evaluated. MRI was performed on postoperative Day 2. Clinical evaluations (visual analog scale [VAS] for the leg and Oswestry Disability Index [ODI] scores) were performed preoperatively and during the follow-up period.

Results: A total of 102 patients (32 men and 70 women) were enrolled in this study. The mean follow-up period was 13.5 months. Postoperative MRI revealed optimal direct neural decompression after fully endoscopic fusion surgery. VAS and ODI scores significantly improved after the surgery. There was no postoperative neurological deterioration.

Conclusions: Fully endoscopic lumbar interbody fusion using the percutaneous biportal endoscopic technique may represent an alternative minimally invasive lumbar interbody fusion surgery for the treatment of degenerative lumbar disease. Long-term follow-up and larger clinical studies are needed to validate the clinical and radiological results of this surgery.