In the lower half of the forearm it lies upon the Flexor digitorum profundus, being covered by the integument and the superficial and deep fasci? and placed between the Flexor carpi ulnaris and Flexor digitorum superficialis.
12.
Partial or complete insertion into the fascia of the forearm, into the tendon of the flexor carpi ulnaris and pisiform bone, into the scaphoid, and into the muscles of the little finger have been observed.
13.
There it supplies one and a half muscles ( flexor carpi ulnaris and the medial half of flexor digitorum profundus ) and courses with the ulnar artery, travelling inferiorly with it deep to the flexor carpi ulnaris muscle.
14.
There it supplies one and a half muscles ( flexor carpi ulnaris and the medial half of flexor digitorum profundus ) and courses with the ulnar artery, travelling inferiorly with it deep to the flexor carpi ulnaris muscle.
15.
In the interval between this process and the olecranon, it lies beneath the flexor carpi ulnaris, and ascending between the heads of that muscle, in relation with the ulnar nerve, it supplies the neighboring muscles and the elbow-joint, and inferior ulnar collateral arteries and the interosseous recurrent arteries.
16.
It is accompanied by two ven?comitantes, and is overlapped in its middle third by the Flexor carpi ulnaris; the ulnar nerve lies on the medial side of the lower two-thirds of the artery, and the palmar cutaneous branch of the nerve descends on the lower part of the vessel to the palm of the hand.
17.
The medial epicondyle gives attachment to the ulnar collateral ligament of elbow joint, to the pronator teres, and to a common tendon of origin ( the common flexor tendon ) of some of the flexor muscles of the forearm : the flexor carpi radialis, the flexor carpi ulnaris, the flexor digitorum superficialis, and the palmaris longus.
18.
The dorsal border ( " margo dorsalis; posterior border " ) begins above at the apex of the triangular subcutaneous surface at the back part of the olecranon, and ends below at the back of the styloid process; it is well-marked in the upper three-fourths, and gives attachment to an aponeurosis which affords a common origin to the flexor carpi ulnaris, the extensor carpi ulnaris, and the flexor digitorum profundus; its lower fourth is smooth and rounded.
