Biomechanics of polyaryletherketone rod composites and titanium rods for posterior lumbosacral instrumentation. Presented at the 2010 Joint Spine Section Meeting. Laboratory investigation.

摘要: Object Interest is increasing in the development of polyaryletherketone (PAEK) implants for posterior lumbar fusion. Due to their inherent physical properties, including radiolucency and ability customize stiffness with carbon fiber reinforcement, they may be more advantageous than traditional instrumentation materials. Customization these materials allow a system that stiff enough promote fusion, yet flexible avoid failure. To understand feasibility using such lumbosacral instrumentation, biomechanical performances were compared pure moment combined loadings between two different PAEK composite rods titanium rods. Methods Four human cadaver L3–S1 segments subjected (compressionflexion compression-extension) as intact specimens, after L-4 laminectomy complete L4–5 facetectomy. Pedicle screw/rod fixation constructs placed from S-1, ...