(Quasi figilula, from figo, to fasten). A buckle, clasp, or button'. It is the name also of an ancient mode of bringing the lips of wounds together. Hippocrates sometimes uses the word for the part of the . bone that forms the outer ankle, perhaps, because the shoes were buckled in that place. The ancients gave this name to the small bone of the leg, from its joining the tibia and muscles together: it is also called perone, facile minus, arunda minor, canna minor cruris, sura, and radius. On the outside of the leg, and behind the tibia, the fibula is placed: its upper extremity is flattened where it is connected to the former; and its lower extremity hath an oblong head, received by the external cavity of the tibia; below this the head of the fibula is extended in a coronoid process, the malleolus externus contiguous to the outside of the astragalus.
The arteries of all the long bones run obliquely into them, and as they thus resist the action of styptics, their wounds occasion obstinate haemorrhages. It is remarkable that in this oblique course the arteries of the os humeri, tibia, and fibula, run obliquely downwards; those of the radius and ulna upwards: a structure seemingly designed to facilitate the circulation from gravity, as the arteries confined by the bone cannot contract. The radius and ulna are, it may be remarked, occasionally raised.