Biomechanical evaluation of the pedicle screw insertion depth effect on screw stability under cyclic loading and subsequent pullout.

@article{Karami2015BiomechanicalEO,
  title={Biomechanical evaluation of the pedicle screw insertion depth effect on screw stability under cyclic loading and subsequent pullout.},
  author={Kristophe J. Karami and Laura E. Buckenmeyer and Ata M Kiapour and Prashant S Kelkar and Vijay Kumar Goel and Constantine K. Demetropoulos and Teck Mun Soo},
  journal={Journal of spinal disorders & techniques},
  year={2015},
  volume={28 3},
  pages={E133-9}
}
STUDY DESIGN A biomechanical ex vivo study of the human lumbar spine. OBJECTIVE To evaluate the effects of transpedicular screw insertion depth on overall screw stability and pullout strength following cyclic loading in the osteoporotic lumbar spine. SUMMARY OF BACKGROUND DATA Although much is known about the clinical outcomes of spinal fusion, questions remain in our understanding of the biomechanical strength of lumbar pedicle screw fixation as it relates to screw sizing and placement… CONTINUE READING
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