THE%20ELBOW:%20Bones%20and%20Actions

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THE ELBOWBones and Actions
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TERMINOLOGY

• Proximal and Distal
• Medial and Lateral
• Superior and Inferior
• Ligament and Tendon
• Condyle large round projection
• Epicondyle a projection located above a condyle
• Fossa- hollow, depression or flattened surface
• Tubercle - small round projection
• Supination external rotation of the radius
• Pronation internal rotation of the radius

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BONES
Medial View
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BONES

• Scapula
• Humerus
• Radius
• Ulna

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RADIUS
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ULNA
Trochlear Notch
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HUMERUS
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SCAPULA
Posterior
Anterior
Posterior
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LANDMARKS

• Radius
• 1. Head
• 3. Radial tuberosity
• Styloid process

• Ulna
• 1. Olecranon process
• 2. Trochlear notch
• 3. Coronoid process
• Styloid process

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1. Head 3. Radial tuberosity
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1. Olecranon process 2. Trochlear notch 3.
Coronoid process
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HUMERUS
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LANDMARKS

• Humerus
• 1. Head
• 3. Lesser tubercle
• 4. Intertubercaluar groove
• 5. Greater tubercle
• 2. Lateral epicondyle
• 3. Captitulum
• 4. Trochlea
• 5. Medial epicondyle
• 7. Olecranon fosssa

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Coracoid Process
Glenoid Cavity
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JOINTS

• Humeroulnar the elbow a hinge
  joint
• Trochlea (humerus)
• Trochlear notch (ulna)
• Radioulnar movement of the forearm a
  pivot joint
• Head of radius
• Ulna
• Radiohumeral no true actions
• Capitulum (humerus)
• Head of the radius

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LIGAMENTS

• Ulnar Collateral
• Radial Collateral
• Annular Ligament

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LIGAMENTS
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ACTIONS

• Elbow or Humeroulnar Joint (Movement of the Ulna)
• Flexion of the elbow
• Extension of the elbow
• Forearm or Radioulnar Joint (Movement of the
  Radius)
• Supination of the forearm
• Pronation of the forearm

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ACTIONS
Extension
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ACTIONS

• What would be the location of a muscle that does
  elbow extension?

Posterior
Anterior
Humerus

• What would be the location of a muscle that does
  elbow flexion?

Fingers
Ulna
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ACTIONS
Supination
Pronation
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ACTIONS
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ACTIONS

• Where is the radius after pronation?
• Where would a muscle need to be located in order
  to cause pronation?

Lateral
Medial
Supination Pronation Palm Up Palm Down
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ACTIONS
Lateral
Medial

• Where is the radius after supination?
• Where would a muscle need to be located in order
  to cause supination?

Supination Pronation Palm Up Palm Down
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What position is his left elbow in?
What position his right elbow in? His right
forearm? His left elbow?
What position is his right forearm in? What is
his name?
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What positions are her right elbow and forearm in?
What positions are her left elbow and forearm in?