Anatomy

Prox: line b/n epicondyles

Med: pronator teres

Lat: brachioradialis

Distal: jxn of brachioradialis and pronator teres

Brachialis: before inserting on ulnar tuberosity

Supinator: from supinator crest of ulna before passing post. to prox radius

Antebrachial fascia

Lat: cephalic vein, Med: basilic vein

medical cubital vein connecting above 2 veins

med and lat cutaneous n of forearm

bicipital aponeurosis

medial continuation of biceps tendon that meets with forearm fascia

• "TAN"
• tendon of biceps brachii

brachial art. (splits to radial and ulnar arteries)

median n. (enters fossa ant to brachialis)

all musc. innervation by median n except 1 1/2 by ulnar n

arise from common flexor tendon

median n exits cubital fossa between 2 heads of pronator teres

ulnar n enters foream b/n 2 heads of flexor carpi ulnaris

• origin: humeral head -common flexor tendon
• ulnar head - med side of coronoid process

Insertion: lat mid-shaft of radius

Innervation: Median n

Action: pronation of forearm

Origin: common flexor tendon

Insertion: base of metacarpals 1 and 2

Innervation: median n

Action: flexes and abducts hand at wrist

Origin: common flexor tendon

Insertion: palmar aponeurosis

Innervation: Median n

Action: flexes hand at wrist

• Origin: Humeral head - common flexor tendon
• Ulnar head - olecranon and posterior ulna

Insertion: pisiform, hamate, and base of metacarpal 5

Innervation: ulnar n

Action: flexes and adducts hand at wrist

• origin: humero-ulnar head - med epicondyle and adjacent margin of coronoid process
• radial head - oblique line of radius

insertion: intermediate phalanges of digits 2-5

innernation: median n

action: flexes intermediate phalanx, metacarpophlangeal jts, and wrist

FDP, FPL, pronator quadratus

median n for lat half runs b/n FPL and FDP

ulnar n for med half runs between FDP and flexor carpi ulnaris