title: [Polysegmental Dynesys system].
abstract: BACKGROUND
  The advantages of using the Dynesys System are claimed to be sufficient and polysegmental dorsal stabilization of the spine while preserving a certain amount of motion.
  
  
  METHODS
  In this study 20 patients with a polysegmental spinal pathology were treated with polysegmental decompression and using the Dynesys Dynamic Stabilization system. None of the patients had had spinal surgery previously. Bone density was measured in all patients preoperatively.
  
  
  RESULTS
  All 20 patients were followed up for an average of 11.8 months postoperatively. The ability to walk was improved from 581.5 m to 1640.0 m after surgery. Complications observed were one leakage of the dura and one hypertensive crisis. Implant loosening was observed in one female patient, which was revised and dorso-ventral fusion was carried out.
  
  
  CONCLUSIONS
  The use of the Dynesys Dynamic Stabilization system is a reasonable treatment in patients with polysegmental pathology of the spine. However, the system does not allow restoration of extensive malalignments or deformities of the spine.
authors.affiliation: Praxis für Wirbelsäulenerkrankungen und Wirbelsäulenchirurgie, Hohlstr. 192, CH-8004, Zürich, Schweiz. info@spine-in-balance.ch
authors.forename: C
authors.initials: C
authors.lastname: Klöckner
authors.forename: A
authors.initials: A
authors.lastname: Beck
mesh_terms: D019544:Equipment Failure Analysis; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D019919:Prosthesis Implantation / Q000379:methods; D012447:Sacrum / Q000601:surgery; D013122:Spinal Diseases / Q000601:surgery*; D013123:Spinal Fusion / Q000295:instrumentation*; D016896:Treatment Outcome