Arm And Cubital Fossa (Lecom)

Front 1

Anterior compartment of the arm

Back 1

Biceps brachii

Brachialis

Corocobrachialis

*All are innervated by the musculocutaneous nerve!

Front 2

Coracobrachialis

Back 2

Proximal Attachment- corocoid process

Distal Attachment- middle third of the medial humerus

Actions- flexes and adducts the arm at the glenohumoral joint

Front 3

Briceps Brachii

Back 3

Proximal Attachment-long head-superglenoid tubercle. Short head- corocoid process

Distal attachment- radial tuberosity and fascia of the forearm

Actions- glenohumeral and elbow flexor, supinator of the forearm, especially when flexed.

Front 4

Brachialis

Back 4

Proximal Attachment- Distal half of anterior humerus

Distal Attachment-corocoid process and tuberosity of ulna.

Action-flexion at the elbow joint

Front 5

What reflex is being tested?

Back 5

Bicipital reflex. Patients limb is extended and relaxed, physicians thumb is placed over the biceps tendon and tapped with the reflex hammer. Normal response is a momentary contraction that confirms the integrity of the C6 spinal segment.

Front 6

What is ruptured?

Back 6

Long head of the biceps brachii. prominant bulge is called the "popeye sign"

Front 7

Path of the musculocutaneous nerve

Back 7

1. Branches from the lateral cord of the brachial plexus.

2. Passes through the coracobrachialis

3.passes between biceps and brachialis

4. emerges at lateral biceps

5. pierces fascia and becomes the lateral cutaneous nerve of the forearm

Front 8

Posterior compartment of the arm

Back 8

Tricepts Brachii

Anconeous

*Both innervated by the Radial Nerve

Front 9

Triceps Brachii

Back 9

Proximal Attachments- Long head- infraglenoid fossa.
Lateral head- posterior lateral humerus.

Medial head- posterior humerus

Distal Attachments- common tendon at olecranon

Actions- Extends, helps adduct.

Front 10

Anconeus

Back 10

Proximal Attachment- lateral epichondyle

Distal Attachment-lateral olecrannon

Acions- slight extensor, stabilizes elbow, adbucts during pronation.

Front 11

Path of the radial nerve

Back 11

originates from the posterior cord of the brachial plexus, enters the arm inferior to the teres major alongside the deep artery. Lies int he radial groove of the humerus.

Front 12

What injury might "wrist drop" signify?

Back 12

Injury to the radial nerve results in partial tricepts paralysis. Most likely only the medial head of the triceps will be affected, extensers of the fingers and wrist is impaired. Sensation will also be impaired.

Front 13

Arteries of the arm

Back 13

The main supply is the Brachial Artery (which runs from the inferior teres major to the cubital fossa) It branches into the deep artery (which supplies the posterior compartment)as well as the radial and ulnar collaterals.

Front 14

Veins of the arm

Back 14

There are both deep and superficial veins. The superficial vein begins in the dorsum of the hand via the dorsal venous network, while the palm is drained from the deep vein.

Front 15

Boundaries of the cubital fossa

Back 15

Superior-imaginary line connecting condyles of the humerus

Medial- pronator teres

Lateral-brachioradiales

floor-brachialis supinator

roof- deep fascia and bicipital aponeuresis

Front 16

Contents of the cubital fossa

Back 16

Brachial artery and radial and ulnar branches. Radial nerve (divides into deep and superficial) Companion veins. Median nerve

Front 17

Label

Back 17

Note fat pads.

Front 18

Back 18

1. Radial collateral ligament

2. Ulnar collateral ligament

3. Annular ligament

Front 19

Ulnar nerve injury

Back 19

The ulnar nerve passes between the medial epichondyle of the humerus and the olcrannon of the ulna. It then passes through the carpal tunnel. It is vulnerable to repetitive motion and compression injury leading to pain, inflammation, and impaired motor function.

Front 20

comic relief!

Back 20

Front 21

Back 21

coracobrachialis

Front 22

Back 22

Biceps brachii

Front 23

Back 23

Brachialis

Front 24

Back 24

triceps brachii

Front 25

Back 25

Aconeus

Front 26

Back 26

1.pectoralis major

2. deltoid

3. triceps brachii

4. brachialis

5. biceps brachii

Front 27

Back 27

1. deltoid

2. triceps brachii

3. brachialis

4. biceps brachii

5. brachioradialis