Chapter 11 Elbow Joint 3 bones, 3 ligaments, 2 joints, 1 capsule

Joint Structure and Motions Elbow flexion and extension Forearm pronation and supination Carrying angle Flexion & Extension – uniaxial 0-145 degrees Forearm pronation – 0-80; supination 0-90; radioulnar joint Carrying angle – 5 degrees males; 10-15 degrees female

Bones and Landmarks Scapula Infraglenoid tubercle Supraglenoid tubercle Coracoid process

Bones and Landmarks Humerus Trochlea Capitulum Medial epicondyle Lateral epicondyle Lateral supracondylar ridge Olecranon fossa

Bones and Landmarks Ulna Olecranon process Trochlear notch Coronoid process Radial notch Ulnar tuberosity Styloid process Head

Bones and Landmarks Radius Head Radial tuberosity Styloid process

Ligaments and Other Structures Elbow joint Medial collateral ligament Lateral collateral ligament Radioulnar joint (proximal and distal) Annular ligament Interosseus membrane

Muscles of the Elbow and Forearm Brachialis Biceps brachii Brachioradialis Triceps brachii Anconeus Pronator teres Pronator quadratus Supinator

Elbow and Forearm Anatomical relationships Summary of muscle action Summary of muscle innervation Muscle action – Table 11.1 page 157 Muscle Innervation = Table 11.2 & 11.3 page 158

Common Elbow Pathologies Lateral epicondylitis Medial epicondylitis Elbow dislocation Supracondylar fracture Lateral epicondylitis – tennis elbow; esp. ECRB Medial Epicondylitis – golfer’s elbow Supracondylar fracture – children with FOOSH; Little league Elbow – stress of medial epicondyle Pulled elbow/ nursemaid’s elbow – radial head subluxation; children under age of 5 Volkmann’s Ischemic contracture – damage to brachial artery