Biomechanical Comparison of Seven Internal Fixation Devices for the Lumbosacral Junction

Results of this study indicate that the new Lumbar Facet Interference Screw fixation yields initial biomechanical stability similar to translaminar screw fixation, yet inferior biomechanical stability compared to pedicle screw fixation. Although these results are encouraging, additional biomechanical studies including cyclic loading tests have to evaluate the mid- and long-term stabilization capacity of this new minimally invasive fixation technique before human application.

Section: Discussionmentioning

confidence: 53%

Biomechanical Testing of the Lumbar Facet Interference Screw

Kandziora¹,

Schleicher²,

Scholz³

et al. 2005

“…The difference may be explained by variations in the pedicle screw systems that were applied because it is known that different pedicle screw systems have a varying influence on the biomechanical stability of lumbar spine motion segments. For example, Guyer et al 15 showed that the USS system used in this study displayed superior biomechanical properties compared to other pedicle screw systems.…”

Section: Discussionmentioning

confidence: 76%

A New Stand-Alone Anterior Lumbar Interbody Fusion Device: Biomechanical Comparison with Established Fixation Techniques

Cain¹,

Schleicher²,

Gerlach³

et al. 2005

“…In a biomechanical study, Guyer et al 32 concluded that transfacet screw fixation limited flexion to a greater extent than extension. Heggeness and Essses 33 found that TLFS increased stiffness 2.4-fold in flexion-compression loading.…”

Section: Discussionmentioning

confidence: 99%

“…8 -11 Results from several biomechanical studies have confirmed that translaminar facet screw fixation significantly increases spine stiffness. [12][13][14] In a recent study, Deguchi et al 14 reported that the immediate postinsertion biomechanical stability achieved with translaminar facet screw fixation was similar to that of pedicle screw fixation.…”

mentioning

confidence: 99%

Effect of Supplemental Translaminar Facet Screw Fixation on the Stability of Stand-Alone Anterior Lumbar Interbody Fusion Cages Under Physiologic Compressive Preloads

Phillips¹,

Cunningham²,

Carandang³

et al. 2004

In vivo during activities of daily living, interbody cage constructs are subject to varying compressive preloads due to external loads generated by paraspinal musculature, and our results suggest that the stability created by the cage (reduction in segmental angular motion) is not constant. The cage construct is likely to be least stable in extension during activities that impart low compressive preloads to the lumbar spine. Supplemental translaminar facet screw fixation will enhance stability of the motion segment treated with threaded cages, particularly during conditions of low compressive preloads, the very condition in which the cage alone is least effective in providing stability.