Biomechanical evaluation and preliminary clinical experience with an expansive pedicle screw design

@article{Cook2000BiomechanicalEA,
  title={Biomechanical evaluation and preliminary clinical experience with an expansive pedicle screw design},
  author={Stephen D. Cook and Samantha L. Salkeld and Thomas S. Whitecloud and Jos{\'e} Mauri Barbera},
  journal={Journal of spinal disorders},
  year={2000},
  volume={13 3},
  pages={
          230-6
        }
}
The advantages of pedicle screw fixation depend on their ability to retain bony purchase until the fusion mass is stable. Osteoporotic bone and removal and replacement of pedicle screws in revision procedures substantially reduce screw mechanical fixation strength and can lead to clinical failure. The objective of this study was to determine if an expansive pedicle screw design could be used to improve biomechanical fixation in bone of compromised quality. Axial mechanical pullout testing was… CONTINUE READING
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