Arthrology, Ligaments & Bursa of the Elbow

Question 1

What are the 3 articulations within the same joint capsule of the elbow joint?

Answer 1

1) Humeroulnar Joint
2) Humeroradial Joint
3) Proximal Radioulnar Joint

Question 2

Anteriorly, the trochlea of the humerus articulates with the trochlear notch of the ulna. Posteriorly, the olecranon articulates with the olecranon fossa in full extension.

Answer 2

Humeroulnar Joint

Question 3

The capitulum articulates with the superior surface of the head of the radius that is slightly cup-shaped.

Answer 3

Humeroradial Joint

Question 4

What type of joint is the elbow joint?

Answer 4

Synovial Hinge Joint

Question 5

What 2 movements are available at the elbow joint?

Answer 5

1) Flexion
2) Extension

Question 6

The head of the radius articulates with the radial notch of the ulna.

Answer 6

Proximal Radioulnar Joint

Question 7

What type of joint is the proximal radioulnar joint?

Answer 7

Synovial Pivot Joint

Question 8

What 2 movements does the proximal radioulnar joint allow?

Answer 8

1) Pronation
2) Supination

Question 9

Rotation of the forearm where the palm faces down.

Answer 9

Pronation

Question 10

Rotation of the forearm where the palm faces up.

Answer 10

Supination

Question 11

What are the 3 ligaments of the elbow?

Answer 11

1) Lateral (Radial) Collateral Ligament
2) Medial (Ulnar) Collateral Ligament
3) Annular Ligament

Question 12

A ligament that runs from the lateral epicondyle of the humerus to the annular ligament of the radius. It prevents cubitus _____ deviation.

Answer 12

Lateral (Radial) Collateral Ligament
Varus

Question 13

A ligament that runs from the medial epicondyle of the humerus to the coronoid and olecranon processes. It prevents cubitus ______ deviation.

Answer 13

Medial (Ulnar) Collateral Ligament
Valgus

Question 14

A bursa located between the olecranon and overlying skin.

Answer 14

Olecranon Bursa

Question 15

What is the layman’s term for olecranon bursitis?

Answer 15

Student’s Elbow

Question 16

A U-shaped ligament that runs from the anterior surface of the radial notch around the head of the radius to the posterior surface of the radial notch to hold the head of the radius in place.

Answer 16

Annular Ligament

Question 17

When the head of the radius gets pulled distally out of the annular ligament due to forceful traction of a pronated forearm. Common for preschool kids.

Answer 17

Slipped Elbow

Question 18

The head of the ulna articulates with the ulnar notch of the radius.

Answer 18

Distal Radioulnar Joint

Question 19

What type of joint is the distal radioulnar joint?

Answer 19

Synovial Pivot Joint

Question 20

What 2 movements does the distal radioulnar joint allow?

Answer 20

1) Pronation
2) Supination

Question 21

There is an _________ ____ that binds the distal radius and ulna together. The ____ does not directly articulate with the carpal bones because of it.

Answer 21

Articular Disc
Ulna

Question 22

These ligaments run from the distal ulna and distal radius on both the palmar and dorsal surfaces.

Answer 22

Palmar & Dorsal Radioulnar Ligaments

Question 23

A thick, dense fibrous sheet of connective tissue between the radius and ulna that helps to stabilize the 2 bones, as well as the proximal and distal radioulnar joints.

Answer 23

Interosseous Membrane