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ELBOW%20COMPLEX

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ELBOW COMPLEX Elbow Complex Type of joint: Hinge joint. ... Interosseous membrane Syndesmosis Carrying Angle Longitudinal axis of humerus: ... – PowerPoint PPT presentation

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Title: ELBOW%20COMPLEX


1
ELBOW COMPLEX
2
Elbow Complex
  • Type of joint
  • Hinge joint.
  • Uniaxial.
  • Function
  • Antebrachium extension and flexion.
  • Antebrachium supination and pronation.

3
Articulating Surfaces
  • Humeroulnar
  • Trochlear notch to trochlea
  • Flexion and extension
  • Humeroradial
  • Fovea of head of radius to capitulum
  • Flexion and extension
  • Pronation and supination

4
Articulating Surfaces
  • Radioulnar joints
  • Superior
  • Radial notch of ulna and annular ligament
  • Inferior
  • Ulnar notch of radius, articular disc, head of
    ulna
  • Intermediate
  • Interosseous membrane
  • Syndesmosis

5
Carrying Angle
  • Longitudinal axis of humerus
  • Long axis through trochlea
  • Results in a lateral deviation of antebrachium
  • 5 degrees in men.
  • 10-15 degrees in women.
  • Increase
  • Cubitus valgus.
  • Decrease
  • Cubitus varus.

6
Ligaments
  • Medial (ulnar) collateral
  • Medial epicondyle to coronoid process and
    olecranon process.
  • Slack ligament results in valgus deformity.

7
Ligaments
  • Lateral (radial) collateral
  • Lateral epicondyle to annular ligament and
    olecranon process.
  • Slack ligament results in varus deformity.
  • Close-packed position
  • Extension.

8
Ligaments
  • Annular ligament
  • Attached to ulna.
  • Forms sling around neck of radius.
  • Note
  • Review relationships of muscles, arteries, and
    nerves to elbow complex from syllabus.
  • Avascular necrosis.
  • Lateral epicondylitis.

9
Relationships
  • Bicipital aponeurosis to brachial artery and
    median cubital vein.
  • Median nerve to brachial artery
  • Ulnar nerve to
  • Medial epicondyle.
  • Olecranon process.
  • Origins of flexor carpi ulnaris.

10
Relationships
  • Epicondyles of humerus to collateral arteries of
    cubital region.
  • Ulnar artery to deep (ulnar) head of pronator
    teres.
  • Median nerve to heads of pronator teres.
  • Superficial and deep radial nerves to supinator
    muscle.
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