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