Hip

Definition and stakes

Joel Dorman Steele,  Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics

“ THE LOWER LIMBS.—THE HIP—The thigh bone, or femur, is the largest and necessarily the strongest in the skeleton, since at every step it has to bear the weight of the whole body. It articulates with the hip bone by a ball-and-socket joint. Unlike the shoulder joint, the cup here is deep, thus affording less play, but greater strength. It fits so tightly that the pressure of the air largely aids in keeping the bones in place. ”
Source: Gutenberg

Cassell's Natural History, Vol…

“ The shape of the hip-bone on each side, so unlike that of man and the man-like Apes, perhaps the Gibbons excepted, depends upon the relation of the muscles which move the hind-quarters and their bones, and the hollow in the hip is well filled up by those which pass backwards to the thigh. The position of those muscles assists the motion of running on all-fours and of springing. ”
Source: Gutenberg

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