[Research advancement of lumbar inter-spinous process non-fusion techniques].

OBJECTIVE: To elucidate the new development, structural features and application of the lumbar inter-spinous process non-fusion techniques.

METHODS: With the review of the development course and important research works in the field of the lumbar inter-spinous process non-fusion techniques, the regularity summary, science induction, and prospect were carried out.

RESULTS: The lumbar inter-spinous process non-fusion technique was a part of non-fusion insert of spinal division posterior surface. According to the design, it could be divided into two major categories: dynamic and static systems. The dynamic system included Coeflex and device for intervertebral assisted motion; the static system included X-STOP, ExtenSure and Wallis. The lumbar inter-spinous process non-fusion technique was a new technique of spinal division, it could reserve the integrated function of intervertebral disc and zygapophysial joint, maintain or recover the segmental movement to a normal level, and have no adverse effect on the neighboring segments. A lot of basic and clinical researches indicated that lumbar inter-spinous process insert had extensive application to curation retrogression lumbar spinal stenosis, discogenic low back pain, articular process syndrome, lumbar intervertebral disc protrusion and lumbar instability and so on.

CONCLUSION: With the matures of lumbar inter-spinous process non-fusion techniques and the increased study of various types of internal fixation devices, it will greatly facilitate the development of treatment of lumbar degenerative disease. But long-term follow-up is needed to investigating the long-term efficacy and perfect operation indication.