Abstract:Posterior lumbar interbody fusion (PLIF) has always been regarded as the first choice for the treatment of lumbar degenerative diseases. However, with the increase of research, more reports describe the defects of fusion. To solve these problems, non-fusion technology came into being. Among them, Dynesys dynamic internal fixation system is a widely used non-fusion technology of lumbar spine at present. Compared with spinal fusion, Dynesys system has a good effect as a stable structure of non-fusion pedicle screws. However, Dynesys system is not without its own series of complications and adverse events. This article reviews the research on its most common complications