Elbow Ligaments and Muscles

Question 1

Radial collateral ligament

Attachments and Function

Answer 1

Attached to the margin of the trochlear notch of the ulna, and it encircles the head of the radius.
It keeps the head in contact with the radial notch of the ulna.

Question 2

Ulnar collateral ligament

Attachments and Function

Answer 2

The ligament originates from the medial epicondyle of the humerus and inserts at the medial border of the coronoid process (front portion) and to the olecranon process of the ulna (back portion).
It prevents excessive abduction of the elbow.

Question 3

Annular ligament

Attachments and Function

Answer 3

It attaches to the margins of the radial notch and blends with the capsule and lateral ligament.
It prevents the outward dislocation of the head of radius in movement of the elbow joint

Question 4

Carrying angle?

Answer 4

5-15 degrees. It allows your forearms to clear your hips when you swing your arms.

Question 5

Flexors

Answer 5

Biceps brachii
Brachialis
Brachioradialis
Pronator teres

Question 6

Biceps brachii

Attachments

Answer 6

Long head: supraglenoid tubercle of scapula and glenoid labrum / Short head: apex of coracoid process to posterior part of radial tuberosity

Question 7

Brachialis

Attachments

Answer 7

Lower half of anterior surface of humerus, intermuscular septum to the coronoid process and tuberosity of ulna

Question 8

Brachioradialis

Attachments

Answer 8

Lateral supracondylar ridge of humerus, lateral intermuscular septum to the lateral side of radius above styloid process

Question 9

Pronator teres

Attachments

Answer 9

Humeral head: medial condyle and intermuscular septum
Ulnar head: medial part of coronoid process
To middle of lateral surface of radius

Question 10

Extensors

Answer 10

Triceps brachii

Anconeus

Question 11

Triceps brachii

Attachments

Answer 11

Long head: infraglenoid tubercle of scapula
Lateral head: above and lateral to spiral groove on posterior surface of humerus
Medial head: below and medial to spiral groove on posterior surface of humerus
to upper surface of olecranon

Question 12

Anconeus

Attachments

Answer 12

Lateral epicondyle of humerus to the lateral surface of olecranon, upper posterior surface of ulna.

Question 13

Nerve Supply

Answer 13

Median, ulnar and radial

Question 14

Capsular Pattern

Answer 14

Flexion

Extension