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)

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.

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 (C7C8)

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:   / championshipchiropractic280141628688300  
LinkedIn:   / drdonaldaozellodc716b3233  
YouTube:    / drdozellodc  
"Running: Maximize Performance & Minimize Injuries" https://www.amazon.com/RunningPerfor...

***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.