Purpose
of Study: Purpose of this study is to summarize the technique of UBE surgery in lumbar interbody fusion and review the clinical outcomes and complications of UBE surgery in lumbar interbody fusion.
Materials and Methods
Medical databases were searched for the key words of unilateral biportal endoscopic surgery and lumbar spinal stenosis using PubMed from 2005 to the present.
Conclusion
UBE spinal surgery is a new technique that can be a feasible alternative and an effective treatment modality for spinal degenerative diseases and can achieve the necessary surgical skills for experienced microscopic surgeons, which is still expanding the indications for lumbar spinal surgery.

Purpose
of study: The purpose of this study is to understand the biomechanics of interspinous devices in lumbar spinal surgery and to review the effectiveness of the devices for lumbar spinal stenosis through recent related articles.
Materials and Methods
Medical databases were searched for the key words of interspinous device and lumbar spinal stenosis using PubMed from 2010 to the present.
Results
Several studies have shown sustained symptomatic improvements after interspinous device insertion. However, most of the prospective, randomized, double-blinded studies have shown that it is not superior to conventional laminectomy from a statistical perspective. Furthermore, interspinous device insertion has been shown to have a higher reoperation rate and to be less cost effective.
Conclusions
A large prospective cohort study with a longer follow-up period comparing decompressive surgery alone versus interspinous device insertion for the treatment of lumbar spinal stenosis is needed to conclusively determine whether the interspinous device is beneficial.