25 Joints (Elbow)

Question 1

Which bones make up the elbow joint?

Answer 1

DIstal humerus
Proximal radius
Proximal ulna

Question 2

Which articulations make up the elbow joint?

Answer 2

made up of 2 articulations: the humeroulnar and the humeroradial

Question 3

What type of joint is the elbow joint?

Answer 3

A hinge type of synovial joint

allows movement in flexion / extension of the sagittal plane

Question 4

Describe the humeroradial joint

Answer 4

The head of the radius articulates with the capitulum and radial fossa on the distal humerus

Question 5

Describe the humeroulnar joint

Answer 5

the trochlea of the distal humerus articulates with the trochlea notch of the ulna

Question 6

What are the 3 ligaments of the elbow joint?

Answer 6

Medial collateral ligament: (anterior, posterior and transverse)

anterior: from medial epicondyle to coronoid process
posterior: from medial epicondyle to olecranon
transverse: across ulna from coronoid process to olecranon

Lateral collateral ligament

Annular ligament: wraps around the head of the radius and attaches on either side to the ulna, helps to form the proximal radioulnar joint. the internal circumference of the annular ligament is lined with articular cartilage to reduce friction on the radial head

Question 7

Which 3 nerves innervate the elbow joint?

Answer 7

articular branches of the:
musculocutaneous
ulnar
radial