Week 9 - Elbow bones

Question 1

Learn inferior humerus bony landmarks

Answer 1

Slide 9

Question 2

Detail of radius and ulna bony landmarks

Answer 2

Slide 10

Question 3

Elbow joint

Type, articulations names, axes and movements, DoF

Answer 3

Synovial joint

2 articulations
- humeroulnar
- humeroradial

Uniaxial
- flexion
- extension

1 degree of freedom

Question 4

Proximal radioulnar joint

Type, components, axes and movements, DoF

Answer 4

Synovial joint – within the elbow synovial capsule, so clinicians
would typically include this joint in the ‘elbow joint’

3 components
- Head of radius
- Radial notch of ulna
- Ulnar

Uniaxial
- pronation
- supination

1 degree of freedom

Question 5

Elbow joint ligaments

Answer 5

Proximal radial collateral ligament - lateral epicondyle of humerus to anular ligament of radius

Proximal ulnar collateral ligament - medial epicondyle of humerus to coronoid process and olecranon of ulna

Anular ligament of radius - encircles and holds radial head in radial notch of ulna

Question 6

Olecranon bursa

Answer 6

• Posterior
• Do commonly get
  inflamed
• What is their
  function?