It also arises in the proximal third of the intermuscular septum that separates it from the extensor digitorum communis, and from the antebrachial fascia
that covers it.
(4,14) The variant ulnar artery descended through the entire forearm superficially, covered only by the skin, subcutaneous tissue and the antebrachial fascia
. For this reason, we classified it as a superficial ulnar artery (SUA).
For example, there are expansions of pectoralis major muscle to the brachial fascia, continuing via lacertus fibrosus and biceps muscle to the antebrachial fascia
and flexor carpi radialis, then to the flexor retinaculum, and finally to the palmaris longus muscle connecting to the fascia of the thenar eminence .
was incised along the same line.
After division the radial artery crossed median nerve superficially from medial to lateral side and then descended laterally to it, remained superficial lying just deep to brachial and antebrachial fascia
up to lower part of forearm from there onwards it had its usual course (Figure-2).
The shaft of distal radius was exposed after incising the deep antebrachial fascia
(Piermattei and Johnson, 2004).
In addition, the deep antebrachial fascia
was excised distally, therefore the nerve was decompressed adequately, which was confirmed by supinating and pronating the forearm intraoperatively.
Origin site was located at the proximal antebrachial fascia
This variant muscle originated from the posterior surface of the distal third of the shaft of the ulna, the adjacent interosseous membrane, and from the internal surface of the antebrachial fascia
occupying the interface of the superficial-deep forearm extensors (Figure IB).
Examples of this type of fascia are observed in the limbs and are observed as fascia lata, crural fascia, brachial fascia, and antebrachial fascia
. While there are proprioceptors embedded in this fascia, its role as a sensory organ is less significant than that of the linking, or fascicular categories.
The radial head attaches firmly to the entire medial border and caudal aspect of the radius, enveloped by a tough septum of the antebrachial fascia
. At the proximal origin, it fuses with the remnant of the pronator teres muscle, which is attached to the medial collateral ligament of the elbow joint.
Oommen (2002) has also recorded inverse (updown) palmaris longus muscle in a cadaver, in which the muscle originates by a long thin tendon from the medial epicondyle by the common flexor tendon and from the antebrachial fascia
in both limbs.