Controversies about Interspinous Process Devices in the Treatment of Degenerative Lumbar Spine Diseases: Past, Present, and Future

<table>The Posterior Fusion System is a titanium implant that has an adjustable, fenestrated core and adjustable-length plates which allows for expansion and compression.</table>

BioMed Research International

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Figure 19

Figure 19: Controversies about Interspinous Process Devices in the Treatment of Degenerative Lumbar Spine Diseases: Past, Present, and Future 