The effect of pilot hole size on the insertion torque and pullout strength of self-tapping cortical bone screws in osteoporotic bone.

@article{Battula2008TheEO,
  title={The effect of pilot hole size on the insertion torque and pullout strength of self-tapping cortical bone screws in osteoporotic bone.},
  author={Suneel Kumar Battula and Andrew J. Schoenfeld and Vivek Sahai and Gregory A. Vrabec and Jason Tank and Glen O. Njus},
  journal={The Journal of trauma},
  year={2008},
  volume={64 4},
  pages={990-5}
}
BACKGROUND All surgical screws can experience failure if the torsional, tensile, and flexion loads exerted on the screws are excessively high. The use of self-tapping screws (STS) results in higher insertion torques (IT) as these screws cut their own threads in the pilot hole drilled in the bone. In this study, the torque for inserting the STS into an osteoporotic bone block for different pilot hole sizes (PHS) was measured and the pullout strength (PS) for extraction of the screws was… CONTINUE READING
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