Upper Limb Anatomy and Kinematics

The video tutorial provides a comprehensive overview of the bony surface anatomy of the elbow, focusing on both the lateral and medial sides. It begins with the lateral side, identifying key structures such as the lateral supracondylar ridge, lateral epicondyle, capitulum, and radial head. The tutorial explains the significance of these structures, particularly in relation to wrist extensors. It then shifts to the medial side, highlighting the medial epicondyle and the formation of an isosceles triangle with the olecranon. The tutorial emphasizes the differences between the lateral and medial supracondylar ridges and provides guidance on palpating these structures.

What is the structure that serves as the proximal attachment for several wrist extensors?

• Deltoid tuberosity

• Lateral epicondyle

• Medial epicondyle

• Capitulum

Which ridge is described as being more superficial compared to its counterpart?

• Lateral supracondylar ridge

• Deltoid tuberosity

• Medial supracondylar ridge

• Radial neck

What is the shape of the capitulum?

• Oval

• Circular

• Rectangular

• Triangular

When the forearm is rotated, which structure remains stationary?

• Medial epicondyle

• Capitulum

• Lateral epicondyle

• Radial head

In which position is the proximal edge of the radial head most prominent?

• Supinated

• Pronated

• Extended

• Neutral

What is the joint line between the radial head and the capitulum called?

• Ulnar radial joint line

• Medial epicondyle joint line

• Lateral epicondyle joint line

• Humeral radial joint line

Which structure is described as not moving during forearm rotation?

• Capitulum

• Lateral epicondyle

• Medial epicondyle

• Radial head

What is the main difference between the lateral and medial supracondylar ridges?

• The lateral ridge is deeper

• The medial ridge is more superficial

• The medial ridge dives quickly

• The lateral ridge is longer

What forms an isosceles triangle with the medial and lateral epicondyles?

• Olecranon

• Capitulum

• Radial head

• Deltoid tuberosity

How far can the medial supracondylar ridge be palpated before it becomes difficult to feel?

• 3 to 4 centimeters

• 1 to 1.5 centimeters

• 2 to 3 centimeters

• 1.5 to 2 centimeters