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 27 On the Digits of the Hand

[Figures of Chapter 27]


The two first figures at the beginning of the twenty-fifth chapter show the sequence of finger bones, as do the three tables illustrating the entire assembly of bones which are placed at the end of this Book. The illustration inserted here, broken down as it were into three figures (so that each presents two bones) presents to view the joints 2 of the fingers. The first of these represents two bones, one of which I have marked A ; it is the metacarpal bone [os metacarpale II] that supports the index finger [digitus secundus]. The other is marked B , and it is the first bone [phalanx proximalis] of the index finger drawn from the outside [prospectus dorsalis], as is the metacarpal bone. In this figure, a picture of the first joint [articulatio metacarpophalangealis] of the fingers is set forth. C marks the round head [caput metacarpale] of the metacarpal bone, D the depression [basis phalangis] of the first bone of the index finger that receives the head marked C. The second figure also shows the first bone of the index finger, marked E , and the second [phalanx media], marked F , in such a way that the drawing would illustrate the appearance of the second joint [art. interphalangealis] of the four fingers. G and H mark the two capitula [tuberositas phalangis distalis] of the first bone of the index finger. I and K mark the depressions [facies] of the second bone which the two heads [condyles] of the first bone enter, while L marks the depression that lies between the heads of the first bone, and into which the tubercle [dorsum] of the second bone, marked M , rising between the two depressions, labeled I and K, enters. The third figure represents the second bone of the index finger, marked N , and the third [phalanx distalis], marked O , so as to show the appearance of the third joint of each digit, which because it closely resembles the second joint of the four fingers we have not filled with other letters. It is also possible to look up pictures of these joints in the first two figures of the twenty-fifth chapter. 3



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 27 On the Digits of the Hand