Quiz on Elbow and Forearm

How many bones make up the Elbow joint?

• 3

• 1

• 2

• 4

Which joint provides much of its stability through the tight fit between the trochlea and trochlear notch?

• Proximal Radio-Ulnar Joint

• Humeroradial Joint

• Humero-Ulnar Joint

• Distal Radio-Ulnar Joint

What is the primary source of bony resistance against a posterior translation of the ulna relative to the distal humerus?

• Coronoid Process

• Trochlear Groove

• Olecranon Process

• Capitulum

Which muscle is the primary forearm pronator?

• Biceps Brachii

• Supinator

• Brachialis

• Pronator Teres

What is the function of the supinator muscle?

• Elbow Flexion

• Elbow Extension

• Pronation

• Supination

Which muscle is a stabilizer of the distal radio-ulnar joint?

• Brachialis

• Pronator Teres

• Pronator Quadratus

• Anconeus

What is the primary function of the pronator quadratus muscle?

• Elbow Flexion

• Elbow Extension

• Supination

• Pronation

Which muscle has the largest physiologic cross-section of any muscle crossing the elbow?

• Anconeus

• Triceps Brachii

• Biceps Brachii

• Brachialis

What is the normal 'Valgus Angle' of the Elbow in healthy men?

• 20 degrees

• 25 degrees

• 13 degrees

• 5 degrees

Which ligament provides resistance against a varus-producing force at the elbow?

• Radial Collateral Ligament

• Annular Ligament

• Medial Collateral Ligament

• Lateral Collateral Ligament