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 22 On the Clavicles

The special cartilage of the joint of the clavicle with the pectoral bone

Though the head of the clavicle abounds in cartilage [c. articularis] no less than the depression of the pectoral bone, Nature has fashioned a cartilage here (S in fig. 4) like the ones which we have said elsewhere are placed in the joints of the lower maxilla with the upper 9 [articulatio temporomandibularis, discus articularis]. Between the depression of the pectoral bone [manubrium sterni, incisura clavicularis] and the head of the clavicle there is a cartilage [discus articularis] as large as the space between the head and the depression. It is thin everywhere and of equal thickness throughout; 10 where it faces the depression it is quite smooth and coated with an oily humor, 11 and it is nowhere attached to the depression or the pectoral bone. Likewise, where it touches the head of the clavicle it is similarly smooth and slippery, and attached not to the head but only to the ligaments 12 surrounding the joint. This cartilage is no less triangular than the head of the clavicle that is articulated to the pectoral bone.



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 22 On the Clavicles