Extensor carpi radialis longus and brevis Contents Anatomy pictures Extensor carpi radialis longus Extensor carpi radialis longus - posterior view Extensor carpi radialis longus - anterior view Extensor carpi radialis longus - lateral view Extensor carpi radialis brevis Extensor carpi radialis brevis - posterior view Extensor carpi radialis brevis - anterolateral view Extensor carpi radialis brevis - lateral view Referred pain Extensor carpi radialis longus pain pattern Extensor carpi radialis brevis pain pattern Muscle type Phasic (both) Weakens when overactivated Symptoms Lateral epicondylitis Weakness of grip, problems using power tools or other tools Painful supination Reduced range of motion of wrist flexion and ulnar deviation Muscle attachment zones Origin zone of extensor carpi radialis longus Insertion zone of extensor carpi radialis longus Origin zone of extensor tendons Insertion zone of extensor carpi radialis brevis Videos Short version Detailed version Myofascial lines Superficial dorsal arm line Trapezius Deltoideus Lateral intermuscular septum Extensor group Extensor carpi radialis longus and brevis Extensor digitorum Extensor carpi ulnaris Extensor digiti minimi Anatomy Extensor carpi radialis longus Position Superficial Origin Lateral supracondylar ridge of humerus, distal 1/3 Lateral intermusculare septum Insertion 2. metacarpal, posterior aspect Main function Wrist: Extension Radial deviation Secondary function Elbow: Flexion Pronation Nerve innervation Segmental: C5-C7 Peripheral: Nervus radialis Arterial supply Brachial artery Radial artery Extensor Carpi Radialis Brevis Position Superficial Origin Lateral epicondylus humerus Fascia antebrachii Insertion 3. metacarpal, posterior aspect Main function Wrist: Extension Radial deviation Secondary function Elbow: Flexion Nerve innervation Segmental: C6-C8 Peripheral: Nervus radialis Arterial supply Brachial artery Radial artery
