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Advances in Orthopedics
Volume 2012, Article ID 424268, 7 pages
http://dx.doi.org/10.1155/2012/424268
Review Article

Pedicle Screw-Based Posterior Dynamic Stabilization: Literature Review

1Department of Orthopedics, Dartmouth-Hitchcock Medical Center, 1 Medical Center Drive, Lebanon, NH 03756, USA
2Department of Orthopaedic Surgery, Beaumont Hospital, Oakland University William Beaumont School of Medicine, 3535 West 13 Mile Road, Royal Oak, MI 48073, USA

Received 16 August 2012; Accepted 30 October 2012

Academic Editor: Allen L. Carl

Copyright © 2012 Dilip K. Sengupta and Harry N. Herkowitz. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Posterior dynamic stabilization (PDS) indicates motion preservation devices that are aimed for surgical treatment of activity related mechanical low back pain. A large number of such devices have been introduced during the last 2 decades, without biomechanical design rationale, or clinical evidence of efficacy to address back pain. Implant failure is the commonest complication, which has resulted in withdrawal of some of the PDS devices from the market. In this paper the authors presented the current understanding of clinical instability of lumbar motions segment, proposed a classification, and described the clinical experience of the pedicle screw-based posterior dynamic stabilization devices.