Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 25 On the Carpus

To what bone it is attached

Thus this fourth bone [os pisiforme] is articulated with another neither on its lower nor its upper surface, nor even on its outer side, but only on its inner side, by a very low capitulum, to the outer side of the third bone [os triquetrum] (but more near the palm of the hand), in the way that we have said bones are placed together by a)rqrwdi/a. 29 This fourth carpal bone therefore has the peculiarity that it is joined to only one wrist bone, that it is the smallest of all the bones of the carpus, and is less concave and convex than the rest. It is more or less spherical but a little longer than it is thick, because it puts forth muscles below 30 while above it receives the insertion of a very strong tendon [m. flexor carpi ulnaris, tendo], as we have said, and for that reason it needed to protrude above and below more than to the sides. Hence the ancient professors of anatomy called it (I conjecture) rectum, the upright bone, 31 being in a quandary which row to assign it to.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 25 On the Carpus