After completing “The Elbow Joint” section, you will be able:

  • To describe the 3 bones
  • To explain the 3 joints
  • To summarise the 3 ligaments
  • To identify the 2 tendons and explain their origin and attachment
  • To validate knowledge by completing the quiz

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3 BONES

The elbow joint is made from 3 bones:

  • Radius: lateral bone of the forearm
  • Ulna: medial bone of the forearm. Posterior aspect of ulna = olecranon, otherwise known as the characteristic “elbow” part
  • Humerus: superior to the radius and ulna
  • Elbow joint general
    Bones of the Elbow Joint
  • Radius
    Radius
  • Ulna 1
    Ulna
  • Humerus 2
    Humerus

3 JOINTS

Three articulations involved with the elbow joint:

 1. Humeroulnar joint (hinge)

  • Hinge joint between the humerus and the ulna

 2. Humeroradial joint (limited ball + socket)

  • Limited ball and socket joint between the humerus and the radius

 3. Proximal radioulnar joint

  • Synovial pivot joint between the radius and the ulna

3 LIGAMENTS (REMEMBER: LIGAMENTS = BONE → BONE)

There are 3 main ligaments of the elbow joint:

1. Radial collateral ligament:

  • Lateral epicondyle of the humerus radius

2. Ulnar collateral ligament:

  • Medial epicondyle of the humerus ulnar

3. Annular collateral ligament:

  • Radial notch of the humerus radial head

2 TENDONS (REMEMBER: TENDONS = MUSCLE → BONE)

 1. Common extensor tendon:

  • Connects extensor muscles of the forearm  lateral epicondyle

 2. Common flexor tendon:

  • Connects flexor muscles of the forearm  medial epicondyle

References

Moore K, Dalley A, Agur A. (2014). Clinically Oriented Anatomy. 7th ed. Philadelphia: Wolters Kluwer.

Teach Me Anatomy. (2017). The Elbow Joint. [online]. Available at: http://teachmeanatomy.info/upper-limb/joints/elbow-joint/ [accessed 1 March 2017].

 

Image References

Bones of The Elbow Joint.   Humerus.  Radius.   Ulna.   Elbow Joints.   Elbow ligaments.   Elbow tendons.