Hooper, Robert [Editor]: The Anatomist's Vade-Mecum: Containing The Anatomy, Physiology, Morbid Appearances, &c. Of The Human Body ; The Art of making Anatomical Preparations, &c. To which are added Anatomical, Physiological, Medical, And Surgical Examinations For Students (London, 1811)

( 60 )

angle or edge, which gives adhesion to a strong ligament that
connects it with the radius.

Cavities. Thegreater sigmoid cavity, at the upper end, be-
tween the aucouoid process and the olecranon. The lesser
sigmoid cavity, at the side of the coronoid process in which
the rounded sides of the head of the radius play ; a. foramen,
near its upper end, for the entrance of the nutritious vessel?.

Connexion. Superiorly with the trochiea of the humerus
by arttirodia, inferiorly with the carpus by arthrodia, and with
the radius by trochoides, as in pronation and supination.

Use. To constitute the chief support of the fore-arm.

The ends of the ulna, at birth, are cartilaginous ; the body
of the bone is very round.

RADIUS.

Manubrium mantis, Focile minus. Canna minor. Additamen-

tum ulna.

The radius, the lesser bone of the two, is long and cylindri-
cal, and situated in the external side of thefure-arm, towards
the thumb.

Eminences. An iq>per head, which is small, round, and
excavated ; its sides are also rounded, for immediately be-
iiind this upper l ead is the neck, at the bottom of which, an-
teriorly, is a considerable tuberosity, which gives an insertion
to the biceps flexor cubiti, and the capsular ligament. A ridge,
which is posterior, and extends along the body of the bone
for the attachment of the interosseous ligament, which unites
it very firmly with the ulr.a.

The inferior extremity of the radios is much larger than the
upper, and is formed into an obloi'g articulating cavity, called
the glenoid: this extremity is sometimes termed the inferior