Upper Extremity, Axilla & Arm

(Anterior) Supraclavicular nerve derived from:

Cervical plexus

(Anterior) Supraclavicular nerve spinal levels:

C3-C4

(Anterior) Axillary nerve derived from:

Superior lateral cutaneous nerve of arm

(Anterior) Axillary nerve spinal levels:

C5-C6

(Anterior) Radial nerve derived from: (biceps)

Inferior lateral cutaneous nerve of arm

(Anterior) Radial nerve spinal levels: (biceps)

C5-C6

(Posterior) Radial nerve derived from: (thumb)

Superficial branch

(Posterior) Radial nerve spinal levels: (thumb)

C6-C8

(Anterior) Median nerve spinal levels:

C6-C8

(Anterior) Median nerve derived from:

Palmar branch and palmar digital branches

(Posterior) Radial nerve derived from:

Posterior cutaneous nerve of arm

(Posterior) Radial nerve spinal levels:

C5-C8

(Posterior) Median nerve derived from:

Proper palmar digital branches

(Posterior) Median nerve spinal levels:

C6-C8

Arm =

Brachial

Forearm =

Antibrachial

Upper extremity consist of what 4 segments?

Shoulder, arm, forearm and hand

Superficial fascia contains:

Fat

Deeps fascia surrounds:

Muscles and bones

Clavipectoral fascia:

Costocoracoid membrane and suspensory ligament of the axilla

Antebrachial fascia:

Extensor retinaculum, palmar carpal ligament, flexor retinaculum

Deep fascia of the hand:

Palmar aponeurosis

Cephalic vein:

Ascends from the lateral aspect of the dorsal venous network; communicates with median cubital vein; superiorly courses along the deltopectoral triangle; drains into the axillary vein

Basilic vein:

Ascends from the medial end of the dorsal venous network; courses on medial aspect of forearm and at inferior part of arm, pierces the brachial fascia

Define: Axilla

Pyramidal space and almost disappears when the arm is fully abducted

Apex (inlet):

Entrance from neck to axilla

Base:

Formed by the concave skin, subcutaneous tissue and deep fascia

Anterior wall:

Formed by the pectoralis major and minor and associated fascia

Posterior wall:

Formed by the scapula and subscapularis and inferiorly by the teres major and latissimus dorsi

Median wall:

Formed by the 1st to 4th ribs, intercostal muscles and overlying serratus anterior

Lateral wall:

A narrow bony wall formed by the intertubercular groove in the humerus

Axillary artery begins:

Lateral border of the 1st rib

Axillary artery ends:

Inferior border of the teres major muscle

Axillary artery: 1st part

Superior thoracic artery

Axillary artery: 2nd part

Thoracoacromial artery, lateral thoracic artery

Axillary artery 2nd part: Thoracoacromial artery C.A.P.D?

Clavicular, Acromial, Pectoral, Deltoid arteries

Axillary artery: 3rd part

Subscapular artery, anterior/posterior humeral circumflex

Axillary artery 3rd part: Subscapular artery subcategories?

Circumflex scapular and thoracodorsal