DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.6271#0090
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sular ligament surrounds the first joint, which incloses, besides
the. end of the radius, the scaphoid and lunated bones; also
a moveable cartilage, which is affixed to the end of the ulna.
There is a loose capsular ligament, which surrounds the se-
cond joint that is inclosed by the larger capsule. The joints
are supplied with synovia, to prevent the effects of friction.
Use. To form the middle part of the hand. See Fingers.
The extremities of the metacarpal bones, at birth, are
epiphyses.
DIGITI MANUS.
The fingers are situated at the inferior extremity of the me-
tacarpus, and consist of a thumb and four fingers. The thumb
has two bones, and each finger three, which are cailcd pha-
langes, from their being placed in rows. Each bone is
broadest at its upper extremity, and formed into a superficial
cavity, whose edges are rough for the insertion of ligament:
the body, or middle part, is convex externally, and concave
before : the lower extremity is rounded, and I ke a trochlea,
or a pulley.
Joints. The joints of the fingers are formed by a round
head and hollow socket, secured by a capsular and lateral li-
gaments, with a fascia from the tendons.
Use. The uses of the hand and fingers, as the instruments
of defence and labour, &c. are so well known, that it would
seem superfluous to enumerate them ; yet, it may be neces-
sary to observe, that one half has a very obscure motion, and
serves as the base for the other, which performs the chief of
the motions. The carpus being composed of many small bones,
yields a little to our force, and accommodates itself to the
different motions of the hand. The metacarpus, by being
composed of several bones, enables us to form a hollow in the
sular ligament surrounds the first joint, which incloses, besides
the. end of the radius, the scaphoid and lunated bones; also
a moveable cartilage, which is affixed to the end of the ulna.
There is a loose capsular ligament, which surrounds the se-
cond joint that is inclosed by the larger capsule. The joints
are supplied with synovia, to prevent the effects of friction.
Use. To form the middle part of the hand. See Fingers.
The extremities of the metacarpal bones, at birth, are
epiphyses.
DIGITI MANUS.
The fingers are situated at the inferior extremity of the me-
tacarpus, and consist of a thumb and four fingers. The thumb
has two bones, and each finger three, which are cailcd pha-
langes, from their being placed in rows. Each bone is
broadest at its upper extremity, and formed into a superficial
cavity, whose edges are rough for the insertion of ligament:
the body, or middle part, is convex externally, and concave
before : the lower extremity is rounded, and I ke a trochlea,
or a pulley.
Joints. The joints of the fingers are formed by a round
head and hollow socket, secured by a capsular and lateral li-
gaments, with a fascia from the tendons.
Use. The uses of the hand and fingers, as the instruments
of defence and labour, &c. are so well known, that it would
seem superfluous to enumerate them ; yet, it may be neces-
sary to observe, that one half has a very obscure motion, and
serves as the base for the other, which performs the chief of
the motions. The carpus being composed of many small bones,
yields a little to our force, and accommodates itself to the
different motions of the hand. The metacarpus, by being
composed of several bones, enables us to form a hollow in the