title: [Research advancement of lumbar inter-spinous process non-fusion techniques].
abstract: 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Spine, the Third Hospital of Hebei Medical University, Shijiazhuang Hebei, 050051, P.R. China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Chen
authors.forename: Wenyuan
authors.initials: W
authors.lastname: Ding
mesh_terms: D006801:Humans; D016268:Internal Fixators; D007405:Intervertebral Disc Displacement / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*