Translations:Wirbelsäule/9/en

sacral angle: this angle is about 30° and is situated between the horizontal and the head-facing surface of the coccyx.
lumbosacral angle: is approx. 135° and is located between the axes of the 5th lumbar vertebra and the 1st sacral vertebra. It decreases in the case of a hollow back and increases in the case of exaggerated pelvic alignment.
pelvic tilt angle (Inclinatio pelvis): about 60° with upright posture. Angle between the virtual plane through the pelvic entrance and the horizontal. Since it increases or decreases in size when the pelvis tilts forwards or backwards, it is relatively easy to determine the position of the pelvis by means of perceptible bone points.
gravity corer: The gravity corer leads from the uppermost cervical vertebra to the upper end of the sacrum. The outer auditory canal, the mandrel of the 2nd cervical vertebra and the centre of gravity of the entire body are located directly ventral to the promontory.