Sacrum

Definition and stakes

Various,  Encyclopaedia Britannica, 11th Edition…

“ The mechanism of the human sacrum is that of a suspension bridge slung between the two pillars or ilia by the very strong posterior sacro-iliac ligaments which represent the chains. The axis of the joint passes through the second sacral vertebra, but the sacrum is so nearly horizontal that the weight of the body, which is transmitted to the first sacral vertebra, tends to tilt that part down. ”
Source: Gutenberg

Portrait of Bernarr Macfadden Bernarr Macfadden,  Vitality Supreme

“ The sacrum in man is much broader than in animals, for it must supply solidity and strength to the lower part of the spine, thus adapting it to the vertical position, and in the same way the lower vertebrae generally are comparatively broader and heavier, gradually decreasing in size and tapering toward the top of the spine like the trunk of a tree. ”
Source: Gutenberg

Portrait of Xavier Bichat Xavier Bichat,  Physiological Researches on Life and Death

“ Every one considers it as a medullary cord, extending from the head to the sacrum, sending in its course various ramifications to the neck, the thorax and the abdomen, following in its distributions a course analogous to those nerves of the spine, and deriving its origin from those nerves, according to some, and from those of the brain, according to others. ”
Source: Gutenberg

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