Screw orientation and plate type (variable- vs. fixed-angle) effect strength of fixation for in vitro biomechanical testing of the Synthes CSLP.

@article{Dipaola2008ScrewOA,
  title={Screw orientation and plate type (variable- vs. fixed-angle) effect strength of fixation for in vitro biomechanical testing of the Synthes CSLP.},
  author={Christian P Dipaola and Justin A Jacobson and Hani A Awad and Bryan Conrad and Glenn R. Rechtine},
  journal={The spine journal : official journal of the North American Spine Society},
  year={2008},
  volume={8 5},
  pages={717-22}
}
BACKGROUND CONTEXT Two common justifications for orienting cervical screws in an angled direction are to increase pullout strength and to allow use of longer screws. This concept is widely taught and has guided implant design. Fixed- versus variable-angle systems may offer strength advantages. Despite these teachings, there is a paucity of supporting biomechanical evidence. The purpose of our study is to test the influence of screw orientation and plate design on the maximum screw pullout force… CONTINUE READING

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