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 4 On the Structural Relationships of Bones

When Nature formed ginglymus

In these bones the ginglymus is made in one continuous joint which has the capacity only for extension and flexion and no other motion, just as if the Maker of things had thought this form of joint should be used as often as it was proper for a joint only to be flexed and extended, or moved only with another simple motion. In this category also (so far as I can conjecture) the ancient Greeks placed bones joined by distinct and separate articulations that are responsible for a simple motion, especially when such articulations vary in what they are joining.



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 4 On the Structural Relationships of Bones