Appropriate size and angulation for axis screw placement.

  title={Appropriate size and angulation for axis screw placement.},
  author={Torphong Bunmaprasert and Narote Treenarong and Aekkarith Khamkhad},
  journal={Journal of the Medical Association of Thailand = Chotmaihet thangphaet},
  volume={98 2},
BACKGROUND A screw larger than 4.0-4.5-mm-diameter screw has now become the preferred sizefor providing maximum anchorage during atlantoaxial segmental fixation and transarticular screw fixation. At present, there are no studies available of Axis (C2) morphology related to screw placement specifically in Thai patients, a situation that might result in surgical complications. OBJECTIVE The purpose ofthis study was to determine the typical width, height and angulations in both C2 pars… CONTINUE READING