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Anatomy Extensor Carpi Ulnaris shorts
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Extensor Carpi Ulnaris (ECU) • Posterior Forearm Muscles – Superficial • Origin: Lateral epicondyle of humerus and posterior ulna • Insertion: Fifth metacarpal base • Concentric Action: Wrist extension and ulnar deviation • Innervation: Posterior interosseous nerve (C7, C8) • Flexor Carpi Ulnaris • Anterior Forearm Muscle – Superficial • Origin: Medial epicondyle of humerus and olecranon • Insertion: Pisiform, hook of hamate and fifth metacarpal • Concentric Action: Wrist flexion and ulnar deviation • Innervation: Ulnar Nerve (C7,C8) • Flexor Carpi Radialis • Anterior Forearm Muscles – Superficial • Origin: Medial epicondyle of humerus • Insertion: Base of second metacarpal Concentric • Action: Wrist flexion and radial deviation • Innervation: Median Nerve (C6, C7) • Supinator • Posterior Forearm Muscles – Deep • Origin: Lateral epicondyle and supinator crest of ulna • Insertion: Lateral surface of radius • Concentric Action: Forearm supination • Innervation: Deep branch of radial nerve (C7, C8) • Anterior Forearm Muscles • Superficial: Flexor Carpi Radialis, Flexor Carpi Ulnaris, Palmaris Longus and Pronator Teres. • Intermediate/Middle: Flexor Digitorum Superficialis. • Deep: Flexor Digitorum Profundus, Flexor Pollicus Longus and Pronator Quadratus. • Consist of mainly flexor and pronator muscles. • Most of the superficial muscles arise from a common flexor tendon on medial epicondyle of humerus. • Posterior Forearm Muscles • Superficial: Anconeus, Brachioradialis, Extensor Carpi Radialis Longus and Brevis, Extensor Carpi Ulnaris, Extensor Digitorum and Extensor Digiti Minimi. • Deep: Abductor Pollicis Longus, Extensor Indicis, Extensor Pollicis Longus and Brevis and Supinator. • Majority of posterior compartment arises from common extensor tendon from lateral epicondyle. • Main actions of posterior forearm muscles are wrist extension and forearm supination. • Superficial extensors can suffer from an overuse injury known as Lateral Epicondylitis. • Extensor Carpi Radialis Brevis (ECRB) • Posterior Forearm Muscles – Superficial • Origin: Lateral epicondyle of humerus • Insertion: Dorsal base of third metacarpal • Concentric Action: Wrist extension and radial deviation • Innervation: Deep branch of radial nerve (C7, C8) • Extensor Carpi Radialis Longus (ECRL) • Posterior Forearm Muscles – Superficial • Origin: Proximal supracondylar ridge on humerus • Insertion: Dorsal base of second metacarpal • Concentric Action: Wrist extension and radial deviation • Innervation: Radial nerve (C6, C7) • Pronator Quadratus • Origin: Distal anteromedial ulna • Insertion: Distal anterolateral radius • Concentric Action: Forearm pronation • It is a crucial stabilizer of the distal radioulnar joint • Innervation: Anterior Interosseous Nerve, which is a branch of the Median Nerve (C7-C8) • Pronator Teres • Anterior Forearm Muscle – Superficial • Origin: Coronoid process and medial epicondyle of humerus • Insertion: Lateral surface of radius • Concentric Action: Forearm pronation • Innervation: Median Nerve (C6, C7) • Dr Donald A Ozello DC of Championship Chiropractic in Las Vegas, NV • Web Site: http://www.championshipchiropractic.com/ • Blog: https://www.championshipchiropractic.... • Twitter: / drdozellodc • Facebook: / championship-chiropractic-280141628688300 • LinkedIn: / dr-donald-a-ozello-dc-716b3233 • YouTube: / drdozellodc • Running: Maximize Performance Minimize Injuries https://www.amazon.com/Running-Perfor... • ***Disclaimer: Viewing this video does not take the place of seeing a medical professional, receiving proper training in the medical profession or working with a fitness professional. Please visit a medical professional for evaluation, diagnosis and treatment. Please work with a fitness professional to learn proper exercise technique and to develop a proper training program. Never perform an exercise that elicits or intensifies symptoms. If an exercise elicits or intensifies symptoms, stop immediately and use a viable substitute. Please receive proper medical training before attempting these medical procedures.
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