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

Bones conterminous to the seventh

The seventh bone [os capitatum] enters the common depression of the first and second with its round or more protuberant head, and in this way is connected to those two bones. On its inner side it is articulated to the sixth bone, and on its outer to the eighth by a rather wide articulation which has a low head and a depression barely carved in the surface. A piece of cartilaginous ligament [l. intercarpale interosseum] comes between a part of this articulation; though this strongly attaches the seventh bone to the eighth, the seventh is of all the carpal bones the most often displaced towards the interior, first because being larger, it does not tolerate impacts as easily as its neighbors, and then again because the ligament on its inner surface securing this bone to its neighbors is not as thick as in the remaining area of the carpus. 47 This is chiefly because Nature wished to fill the passage with tendons of the mass and thickness of ligaments (Q in the 5th table of muscles, C in the 6th), 48 which extend this way in great numbers from the inner area of the forearm to move the fingers. However this may be, the seventh bone is connected to four carpal bones: the first, second, sixth, eighth, and to the metacarpal bone supporting the middle finger.



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