title: [Progress on dynamic neutralization system in treating lumbar degenerative diseases].
abstract: Dynamic stabilization technology has increasingly become the hot spot in basic and clinical research for treating lumbar degenerative diseases. As one kind of dynamic stabilization technology,dynamic neutralization system (Dynesys) keeps the spinal motion ability and improve clinical symptoms of patients, moreover, it shows a certain advantage in delaying the degeneration of adjacent segments. From the available documents,the preliminary biomechanical and clinical results of Dynesys were optimistically, it has become another choice in treating the lumbar degenerative diseases besides the lumbar fusion, and it primarily applies to the treatment of mild to moderate lumbar degenerative disease. However, it lacks a mechanism to maintain and restore the lumbar lordosis and patients need active stretching to achieve lordosis. What's more, how to extend the service life and prevent complications remain to be solved, the long-term effect and the mechanism of delaying the adjacent segment degeneration need further investigation. In this article, the design principle, biomechanical research, clinical outcome and clinical application of Dynesys was reviewed.
authors.affiliation: Department of Orthopaedics, Sir Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China.
authors.forename: Xi-Jun
authors.initials: XJ
authors.lastname: Chen
authors.forename: Shun-Wu
authors.initials: SW
authors.lastname: Fan
mesh_terms: D000818:Animals; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D013122:Spinal Diseases / Q000601:surgery*