Concepedia

Publication | Closed Access

Effects of Bone Mineral Density on Pedicle Screw Fixation

DOI

638

Citations

0

References

1994

Year

Thomas L. Halvorson, Lee Ann Kelley, Kevin A. Thomas, Thomas S. Whitecloud, Stephen D. Cook
Spine

Abstract

Pedicle screw pullout strength was highly correlated with bone mineral density. A 5.5 mm tap or preparation with a ganglion knife improved pullout strength. Use of pedicle screws in conjunction with laminar hooks at two levels improved pullout strength.