Elbow JointKinesiology

Elbow JointHumeroulnar

JointTrue hinge joint

Humeroradial JointRestricted ball

and socket joint

Parts of the Humerus

Trochleamedial sidespool like process

Capitulumlateral sidespherical knob

Medial and Lateral Epicondyle

C. Medial epicondyle

D. TrochleaE.

Capitulum

Lateral Epicondyle

Parts of the Radius

Radial notchdirectly beneath the capitulum of

the humerus

Unable to abduct and adduct because of the annular ligament that encircles the radial head and binds it to the radial notch of the ulna

Proximal and Distal Radioulnar Joints

Movement – Pronation and Supination

Proximal Radioulnar Joint The two joints of the elbow as well as

the proximal radioulnar joint is completely enveloped in a single extensive capsule

The capsule is strengthened by four ligamentsanterior, posterior, radial collateral, and

ulnar collateral.

Radial collateral ligament

Movements of the Elbow Flexion and Extension

Muscles of the Elbow and Radioulnar Joints

FLEXORS

1. Biceps brachii

2. Brachialis

3. Brachioradialis

4. Pronator teres

EXTENSORS

1. Tricpes brachii

2. Anconeus

SUPINATORS

1. Biceps brachii

2. Supinator

PRONATORS

1. Pronator teres

2. Pronator quadratus