Stability

Question 1

Passive stabilising structures (3)

Answer 1

Shape of articular surfaces
The joint Capsule
Ligaments

Question 2

Active stabilising structures (2)

Answer 2

Triceps / biceps / brachialis / brachioradialis
Common flexor/extensor tendons

Question 3

Elbow ligaments

Answer 3

Radial collateral
Ulna collateral
Annular

Question 4

Radial collateral origin

Answer 4

lateral epicondyle

Question 5

Radial collateral insertion

Answer 5

supinator crest of ulna

Question 6

Radial collateral function

Answer 6

Resists varus stress

Question 7

Ulna collateral origin

Answer 7

medial epicondyle

Question 8

Ulna collateral insertion

Answer 8

base of coronoid process and olecranon

Question 9

Ulna collateral function

Answer 9

Resists Valgus stress

Question 10

Annular origin

Answer 10

anterior and posterior margins of the radial notch of the ulna

Question 11

Annular insertion

Answer 11

Head and neck of radius

Question 12

Annular function

Answer 12

Resists dislocation of radial head forward, backward and lateral displacement