Ligaments of elbow

Question 1

ulnar (medial) collateral ligament

Answer 1

• triangular ligament composed of three bands (anterior, posterior, and oblique) on the medial side of the elbow

Question 2

What side is the primary stabilizer to valgus stress?

Answer 2

anterior portion

Question 3

radial (lateral) collateral ligament

Answer 3

fan shape ligament on the lateral side of elbow

Question 4

What does the radial collateral ligament reinforce?

Answer 4

humeroradial articulation, protects against varus stress, and resists distraction to the joint surface

Question 5

annular ligament

Answer 5

surrounds the radial head and binds the radial head to the ulna to prevent inferior subluxation during traction forces on the forearm

Question 6

radial head subluxation

Answer 6

most common in younger children

Question 7

interosseus membrane

Answer 7

functions to transmit compressive and muscle force from radius to ulna

Question 8

elbow axis orientation

Answer 8

the longitudinal axis of the forearm is abducted relative to the longitudinal axis of the humerus in full extension

Question 9

What happens as the elbow flexes

Answer 9

the forearm moves medially to be parallel to the longitudinal axis of the humerus in full flexion

Question 10

what is the carrying angle for men?

Answer 10

5 degrees

Question 11

What is the carrying angle for women?

Answer 11

10-15 degrees

Question 12

what are the primary elbow extensors

Answer 12

triceps
anconeus

Question 13

what are the primary elbow flexors?

Answer 13

biceps brachii
brachialis
brachioradialis
pronator teres

Question 14

biceps - passive insufficiency

Answer 14

elbow curls in shoulder extension

Question 15

biceps - active insufficiency

Answer 15

elbow curls in shoulder flexion

Question 16

triceps - passive insufficiency

Answer 16

elbow press in shoulder flexion

Question 17

triceps - active insufficiency

Answer 17

elbow kickback in shoulder extension