Dynamic Stabilization with the Dynesys System

Abstract

The vertebral stabilization system (Dynesys) [7, 24, 25], designed in France by Gilles Dubois approximately 15 years ago, and successfully used since 2001 at the Orthopaedic Clinic of the S. Chiara Hospital in Pisa, is composed of transpedicular conical screws, a polycarbonate urethane spacer and a polyethylene tensioning cord (◘ Fig. 5.1). It works as a real shock absorber, so that it not only enlarges the functional unit, re-opening its intervertebral foramen, but, with the pretensioning achieved in the operating field, restores force and stability to the disc, enhancing the biological possibilities of curing the degenerative disease.