Extensor digitorum Contents Anatomy pictures Extensor digitorum - posterior view Extensor digitorum - lateral view Referred pain pattern Extensor Digitorum - pain pattern Muscle type Phasic Weakens when overactivated Symptoms Weakness of grip Problems gripping items Loss of full flexion of fingers Muscle attachment zones Origin zone of extensor tendons (extensor carpi radialis brevis, extensor digitorum, extensor carpi ulnaris and extensor digiti minimi) 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 Position Superficial Origin Lateral epicondylus humeri Fascia anterbrachii Septa intermuscularia Insertion Dorsal aponeurosis of 2.-5. fingers Main function MCP-joint: Extension PIP: Extension DIP: Extension Wrist: Extension Secondary function Wrist: Radial deviation CMC 5: Medial rotation Elbow: Extension Nerve innervation Segmental: C7-C8 Peripheral: Nervus radialis Arterial supply Posterior interossesus artery
