At the midarm level the musculocutaneous nerve has typically deviated more lateral in the fascial plane between the short head of the biceps brachii muscle and the coracobrachial muscle
Sometimes between the short head of the biceps brachii muscle and the brachialis muscle – if it is a bit more more distal
At this level the radial nerve has deviated away from the medial bicipital groove
Musculocutaneous nerve (cyan arrow), median nerve (red arrows), ulnar nerve (green arrows), short head of the biceps brachii muscle (white asterix), coracobrachial muscle (green asterix), triceps brachii muscle (cyan asterix), brachial artery (A)
