Radius and ulna

This video tutorial explores the anatomy of the forearm, focusing on the radius and ulna bones. It begins with an introduction to common forearm injuries, emphasizing the importance of understanding the anatomical position. The tutorial then delves into the detailed anatomy of the radius and ulna, highlighting their structures, articulations, and associated ligaments. Finally, it discusses various types of fractures, such as Colles and Smith fractures, and their clinical implications.

What is the anatomical position of the forearm when the palm is facing forward?

• Posterior

• Anterior

• Prone

• Supine

Which bone is located on the lateral side of the forearm?

• Humerus

• Ulna

• Radius

• Scaphoid

What is the function of the annular ligament in the forearm?

• Connects the ulna to the carpal bones

• Reinforces the proximal radio-ulnar joint

• Attaches the biceps brachii to the radius

• Supports the distal end of the radius

What is the name of the rugged prominence on the radius that serves as the attachment for the biceps brachii?

• Radial tuberosity

• Olecranon

• Coronoid process

• Styloid process

Which bone is longer in the forearm, the radius or the ulna?

• Ulna

• Depends on the individual

• Radius

• Both are equal

What is the name of the large rounded projection at the proximal end of the ulna?

• Styloid process

• Radial head

• Olecranon

• Coronoid process

Which type of fracture involves a transverse break in the distal radius with posterior displacement?

• Monteggia fracture

• Galeazzi fracture

• Colles fracture

• Smith fracture

What is a Smith fracture characterized by?

• Posterior displacement of the distal radius

• Dislocation of the ulna

• Anterior displacement of the distal radius

• Fracture of the humerus

What is the name of the joint formed by the articulation of the radial head and the ulna?

• Wrist joint

• Distal radio-ulnar joint

• Proximal radio-ulnar joint

• Elbow joint

Which ligament is located between the coronoid process and the medial epicondyle of the humerus?

• Annular ligament

• Radial collateral ligament

• Ulnar collateral ligament

• Interosseous membrane