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. Author manuscript; available in PMC: 2013 Feb 2.
Published in final edited form as: J Biomech. 2011 Dec 29;45(3):455–460. doi: 10.1016/j.jbiomech.2011.12.002

Figure 2.

Figure 2

(a) Curve of Carus (black dots) for prescribing the displacement and rotation of the fetal head during the second stage, starting from a position in which the tip of the head is at the level of the line connecting the ischial spines bilaterally. The elliptical gray region is the cross-section of the pubic bone in the mid-sagittal plane. (b) The interpolated fetal head displacement. (c) The interpolated fetal head rotation. The numbers (mm) represent the distance the tip of the head has travelled along the curve of Carus.