The sagittal plane is the plane of a body 'slice' in a front to back direction.

sagittal plane in blue
The blue colour shows the sagittal plane.


Anatomic plane

If there was a very thin gap between two glass doors, and you turned sideways, holding out your arms out to the side up to shoulder height, to slip through the gap, then the glass doors would be considered to be in the sagittal plane in relation to your body.


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The geometry of the knee in the sagittal plane. O'Connor JJ, Shercliff TL, Biden E and Goodfellow JW. Proc Inst Mech Eng H. 1989;203(4):223-33.

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