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Updated: Jun 14, 2025

Three-dimensional Navigation-guided, Prone, Single-position, Lateral Lumbar Interbody Fusion Technique
Published on: July 15, 2021
Biportal endoscopic transforaminal lumbar interbody fusion with large cage: a technique without additional spacer
Zhengyu Xu1, Zhong Zhuolin1, Xiaowei Jing1
1Department of Orthopedics, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine,Zhejiang University, N1, Shangcheng.st, Yiwu City, China.
Background:
Large spacers offer numerous advantages such as higher fusion rates and lower subsidence rates. However, due to the anatomical constraints of the approach, the use of large spacers in biportal endoscopic transforaminal lumbar interbody fusion(BE-TLIF) necessitates an additional incision and special instruments for spacer implantation leading to less frequent use.
Methods:
This study has refined several techniques within BE-TLIF. We insert the cage and impact the cage transverse with a special design instrument in the same working portal. This allows for the use of large spacers during BE-TLIF procedures without the need for an auxiliary cage-inserting incision.
Conclusion:
The technique is a straightforward, safe, and minimally invasive method for inserting large cages in the treatment of lumbar instability.

