The elbow joint (dave's notes)

Question 1

What are the components of the elbow joint?

Answer 1

Humeroradial and humero-ulnar

Question 2

Describe the humeroradial component of the elbow joint

Answer 2

Synovial hinge joint between the capitulum of humerus and the radial head
The cylindrical head of radius is concave to fit the capitellum.

Question 3

Describe the numero-ulnar component of the elbow joint

Answer 3

Synovial hinge joint between trochlear of jumpers and ulnar trochlear notch

The upper end of the ulna shows a deep trochlear notch. The engineering of the joint results in a carrying angle.

Question 4

What does the elbow joint communicate with?

Answer 4

The proximal radioulnar joint

Question 5

What are the attachments of the elbow joint capsule?

Answer 5

Attaches to the humerus at the margins of the lower rounded ends
Distally attached to the trochlear notch of the ulna and the annular ligament
Not attached to the radius

Question 6

What ligament prevents herniation of the elbow joint capsule?

Answer 6

The quadrate ligament

Question 7

What ligament of the elbow joint is triangular?

Answer 7

The ulnar collateral (medial ) ligament

Question 8

What are the components of the ulnar collateral ligament?

Answer 8

Anterior band, posterior band, and middle band.

Question 9

What does the anterior band of the ulna collateral ligament connect? What is notable about this section?

Answer 9

This is the strongest part of the ulnar collateral ligament.
Passes from medial epicondyle of the humerus

Question 10

What does the posterior band of the ulnar collateral ligament ??arise from

Answer 10

The medial border of the olecranon

Question 11

What is the role of the medial band of the ulnar collateral ligament?

Answer 11

Connects the anterior and posterior bands, and lodges the ulna nerve

Question 12

List the ligaments of the elbow joint

Answer 12

Ulnar collateral ligament (medial)
Radial collateral ligament
Annular ligament

Question 13

What are the attachments of the radial collateral ligament?

Answer 13

This is a single flattened band from below the ???CEO to the annular ligament

Question 14

What are the attachments of the annular ligament?

Answer 14

Attached to the radial notch margins of the ulna, and slings around the head and neck of the radius.

Question 15

What is the nerve supply to the elbow joint?

Answer 15

Musculocutaneous, median, ulnar and radial nerves

Question 16

What are the movements of the elbow joint?

Answer 16

Flexion and extension (140;), axis of hinge lies oblique

Question 17

Where should you aspirate the elbow joint?

Answer 17

The medial side is avoided because of the ulnar nerve.