Anatomy of the Elbow Joint

Dr. Gooden discusses the bony landmarks and mechanics of the elbow and radioulnar joints, emphasizing their role in upper extremity movements. The video covers the bones involved, muscle attachments, and key bony landmarks. It explains the mechanics of the elbow as a hinge joint, the role of ligaments in stability, and common injuries like UCL tears. The carrying angle and the pivot nature of the radioulnar joint are also discussed, with practical examples and references to further learning resources.

What is the primary function of the elbow and radioulnar joints in upper extremity movements?

• To stabilize the shoulder

• To enhance leg movements

• To support the spine

• To position the hand for manipulation

Which bone is larger proximally in the forearm?

• Humerus

• Ulna

• Scapula

• Radius

Which bone serves as the distal attachment for muscles that flex and extend the elbow?

• Radius and ulna

• Clavicle

• Humerus

• Scapula

What type of joint is the elbow primarily considered?

• Saddle

• Pivot

• Hinge

• Ball and socket

Which ligament is most commonly associated with injuries in baseball players?

• Radial collateral ligament

• Ulnar collateral ligament

• Medial collateral ligament

• Annular ligament

What is the carrying angle of the elbow?

• The lateral deviation of the forearm from the arm

• The angle of rotation at the radioulnar joint

• The angle between the humerus and ulna

• The angle at which the elbow flexes

What is the primary movement allowed by the radioulnar joint?

• Rotation and circumduction

• Abduction and adduction

• Pronation and supination

• Flexion and extension

Which anatomical feature allows the radius to rotate around the ulna?

• Radial notch

• Olecranon fossa

• Capitulum

• Trochlear notch

What is the role of the interosseous membrane in the forearm?

• To separate the radius and ulna

• To bind the radius and ulna together

• To support the humerus

• To connect the scapula and clavicle

Which ligament provides a sling-like effect around the radial head?

• Medial collateral ligament

• Annular ligament

• Radial collateral ligament

• Ulnar collateral ligament