Elbow Joint Anatomy and Movement

Dr. Alsup discusses the anatomy of the elbow region, focusing on the humero-ulnar, humero-radial, and proximal radio-ulnar joints. The video covers the structure and function of these joints, including ligaments and bursae, and highlights clinical conditions like bursitis and pulled elbow. The annular ligament's role in joint movement and common injuries in children are also explained.

Which joint is commonly referred to as the true elbow joint?

• Proximal radio-ulnar joint

• Humero-ulnar joint

• Humero-radial joint

• Distal radio-ulnar joint

What type of movement is the humero-ulnar joint primarily responsible for?

• Abduction and adduction

• Circumduction

• Flexion and extension

• Rotation

Which structure is responsible for the uniaxial movement of the humero-ulnar joint?

• Trochlea and trochlear notch

• Annular ligament

• Radial head

• Olecranon bursa

Which ligament is located on the medial side of the elbow joint?

• Interosseous membrane

• Ulnar collateral ligament

• Annular ligament

• Radial collateral ligament

What condition is caused by inflammation of the olecranon bursa?

• Arthritis

• Bursitis

• Fracture

• Tendinitis

What is the primary function of the annular ligament in the proximal radio-ulnar joint?

• Supports the humero-ulnar joint

• Allows pivoting of the radius

• Prevents abduction

• Facilitates flexion and extension

In which position are the radius and ulna parallel?

• Flexion

• Supination

• Extension

• Pronation

What movement occurs at the proximal radio-ulnar joint during pronation?

• Both bones rotate together

• The radius rotates around the ulna

• No movement occurs

• The ulna rotates around the radius

What is a common term for the injury where the radial head is displaced from the annular ligament?

• Golfer's elbow

• Pulled elbow

• Tennis elbow

• Frozen shoulder

At what age is a pulled elbow most likely to occur in children?

• 1-2 years

• 3-4 years

• 5-6 years

• 7-8 years