Flashcards in Upper limb (arm) Deck (12)
What are the features of the mid-humeral shaft?
- Crests of the greater and lesser tuberosities
- Deltoid tuberosity
- Radial groove
What are the features of the distal humerus?
- Medial and lateral supracondylar ridges
- Medial and lateral epicondyles.
- Coronoid fossa
- Olecranon fossa
What are the relations of the brachial artery?
- The brachial artery is in the anterior compartment of the arm.
- It lies initially on the medial aspects of the arm but gradually moves laterally as it descends, entering into the elbow between the medial and lateral epicondyles.
- Lies in a groove along medial borders of biceps.
What are the relations of the profunda brachii artery?
- The profunda brachii artery is closely associated with the radial nerve.
- It passes into the posterior compartment of the arm through the triangular interval with the nerve.
- It then travels in the radial groove of the humerus with the nerve.
- It bifurcates into its 2 terminal branches midway along the arms.
What are the terminal branches of the profunda brachii artery?
- Middle collateral artery
- Radial collateral artery
What are the relations of the musculocutaneous nerve?
- Enters the anterior compartment of the arm through the coracobrachialis.
- Travels obliquely (medial to lateral) down the arm between brachialis and biceps brachii.
- Exits the arm lateral to the biceps tendon.
What is the terminal branch of the musculocutaneous nerve?
Lateral cutaneous nerve of the forearm
What are the relations of the median nerve?
- Enters the anterior compartment of the arm anterior to the inferior border of teres major.
- Associated with the the brachial artery along its course.
- Proximally, the nerve is located lateral to the artery.
- Midway, the nerve crosses the artery to become medial to it.
- Lies in a groove on the medial border of biceps brachii.
What are the relations of the ulnar nerve?
- The ulnar nerve enters the anterior compartment of the arm lateral to the brachial artery.
- Half way along the arm, it pierces the medial intermuscular septum to enter the posterior compartment.
- It passes posterior to the medial epicondyle, in a groove between it and the olecranon.
- It enters the anterior compartments of the forearm between the 2 heads of flexor carpi ulnaris.
What are the branches of the brachial artery?
- Profunda brachii artery
- Nutrient branches to the humerus
- Superior ulnar collateral artery
- Inferior ulnar collateral artery
- Muscular branches
What are the veins of the arm?
- Basilic vein: Runs on the medial side of the arm. Pierces deep fascia mid-way along the arm to join venae comitantes of brachial artery.
- Cephalic vein: Runs on the lateral side of the arm. Pierces clavipectoral of anterior axillary wall to join axillary artery.