It also supplies a nutrient branch to radius and ulnar, and a branch to median ner\^e — •
the comes nervi mediani.
(2) The Posterior Interosseous. This branch of the common interosseous passes
backwards between the oblique Ugament and the interosseous membrane and courses
down the back of the forearm as far as the wrist. It anastomoses with the posterior carpal
of radial and ulnar and the anterior interosseous.
Branch : —

Posterior Interosseous Recurrent is given off near the origin of the posterior interosseous
and passes under the anconeus to the interval between the olecranon and external condyle,
anastomosing with the superior profunda anastomotic magna.
32



PLATE VII

The Anastomotic Vessels of Elbow and Wrist

(i) The Anastomosis round the Elbow Joint.
In the anastomosis round the elbow joint there are seven vessels which take part in
it. Three branches coming down — superior and inferior profunda and the anastomotic ;
and four branches passing upwards — radial recurrent, anterior and posterior ulnar recur-
rents, and the posterior interosseous recurrent.
For convenience they may be divided into four groups : (i) In front of the External
Condyle, superior profunda anastomosing with radial recurrent ; (2) In front of Internal
Condyle, the anastomotic with anterior ulnar recurrent ; (3) Behind External Condyle,
the anastomotic with interosseous recurrent and superior profunda ; (4) Behind Internal
Condyle, the anastomotic with the posterior ulnar recurrent and inferior profunda.
The vessels entering into the anastomosis round the elbow are formed by branches
from : (i) Brachial, (2) Ulnar and its interosseous branch, (3) Radial.
From the Brachial ; —

(A) The Superior Profunda anastomosing with : —
(i) The Interosseous recurrent of Ulnar.
(2) The Anastomotica Magna of Brachial.
(B) The Inferior Profunda with : —
(i) Posterior Ulnar recurrent.
