Movements

Question 1

What movements are allowed at the elbow joint

Answer 1

Flexion/Extension

Question 2

Describe flexion of elbow

• Plane/axis
• Range + limits
• Muscles

Answer 2

Plane/axis: sagittal plane/frontal axis
Range: 140-150 degrees
limits: soft tissue approximation + tension in triceps
Muscles: Brachialis, Biceps Brachii + Brachioradialis

Question 3

Describe extension of the elbow

• Plane/axis
• range + limits
• muscles

Answer 3

Plane/axis: sagittal plane/frontal axis
Range: 0 (+ or - 5 degrees)
limits: bony apposition of olecranon fossa
Muscles: Triceps Brachii, Anconeus

Question 4

Describe supination of the forearm

• Plane/axis
• range + limits
• muscles

Answer 4

Plane/axis: horizontal plane/vertical axis
Range: 90 degrees
limits: interosseous membrane (oblique cord) + anterior radioulnar ligament
Muscles: Biceps brachii + supinator
- Brachioradialis will supinate a pronated forearm to neutral

Question 5

Describe pronation of the forearm

Answer 5

Plane/axis: horizontal plane/vertical axis
Range: 80 degrees
limits: bony approximation of radius on ulna
Muscles: Pronator teres + prontator quadratus
- brachioradialis will pronate a fully supinated forearm back to neutral