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cardinal points

 

Definition:

  1. the four points in the pelvic inlet toward one of which the occiput of the baby is usually directed in case of head presentation: two sacroiliac articulations and the two iliopectineal eminences corresponding to the acetabula;
  2. six points of a compound optic system: the anterior focal point, the posterior focal point, the two principal points, and the two nodal points.
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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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