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Adv Orthop. 2013;2013:451956. doi: 10.1155/2013/451956. Epub 2013 Mar 31.

Biomechanics of posterior dynamic stabilization systems.

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  • 1Department of Neurosurgery, School of Medicine, Koc University, Rumelifeneri Yolu, 34450 Istanbul, Turkey ; Department of Mechanical Engineering, Colleges of Engineering, Koc University, Rumelifeneri Yolu, 34450 Istanbul, Turkey.


Spinal rigid instrumentations have been used to fuse and stabilize spinal segments as a surgical treatment for various spinal disorders to date. This technology provides immediate stability after surgery until the natural fusion mass develops. At present, rigid fixation is the current gold standard in surgical treatment of chronic back pain spinal disorders. However, such systems have several drawbacks such as higher mechanical stress on the adjacent segment, leading to long-term degenerative changes and hypermobility that often necessitate additional fusion surgery. Dynamic stabilization systems have been suggested to address adjacent segment degeneration, which is considered to be a fusion-associated phenomenon. Dynamic stabilization systems are designed to preserve segmental stability, to keep the treated segment mobile, and to reduce or eliminate degenerative effects on adjacent segments. This paper aimed to describe the biomechanical aspect of dynamic stabilization systems as an alternative treatment to fusion for certain patients.

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