Muscles Brachioradialis-EPL/ muscle diagram
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| Brachioradialis PA | Proximal 2/3 of lateral supraepicondylar ridge of humerus.
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| Brachioradialis DA | Lateral surface of distal end of radius proximal to styloid process.
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| Brachioradialis A | Elbow flexion (maximal in mid-pronated position).
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| Brachioradialis N | Radial (C5, C6, C7).
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| Extensor Carpi Radialis Longus PA | Lateral supraepicondylar ridge of humerus.
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| Extensor Carpi Radialis Longus DA | Dorsal aspect of base of 2nd metacarpal.
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| Extensor Carpi Radialis Longus A | Wrist extension, radial deviation.
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| Extensor Carpi Radialis Longus N | Radial (C6, C7).
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| Extensor Carpi Radialis Brevis PA | Lateral epicondyle of humerus (common extensor origin).
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| Extensor Carpi Radialis Brevis DA | Dorsal aspect of base of 3rd metacarpal.
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| Extensor Carpi Radialis Brevis A | Wrist extension, radial deviation.
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| Extensor Carpi Radialis Brevis N | Radial (deep branch) (C7, C8).
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| Extensor Digitorum PA | Lateral epicondyle of humerus (common extensor origin).
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| Extensor Digitorum DA | Extensor expansions of 2nd – 5th digits.
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| Extensor Digitorum A | MP extension. DIP and PIP extension via tension of extensor expansion.
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| Extensor Digitorum N | Radial (posterior interosseous) (C7, C8).
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| Extensor Digiti Minimi PA | Lateral epicondyle of humerus (common extensor origin).
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| Extensor Digiti Minimi DA | Extensor expansion of 5th digit.
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| Extensor Digiti Minimi A | MP, DIP, PIP extension of 5th digit.
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| Extensor Digiti Minimi N | Radial (posterior interosseous) (C7, C8).
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| Extensor Carpi Ulnaris PA | Lateral epicondyle of humerus, posterior border of the ulna via a shared aponeurosis.
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| Extensor Carpi Ulnaris DA | Dorsal aspect of base of 5th metacarpal.
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| Extensor Carpi Ulnaris A | Wrist extension, ulnar deviation.
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| Extensor Carpi Ulnaris N | Radial (posterior interosseous) (C7, C8).
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| Supinator PA | Lateral epicondyle of humerus, radial collateral and anular ligament, supinator fossa, crest of ulna.
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| Supinator DA | Lateral, posterior, and anterior surfaces of the proximal 1/3rd of radius.
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| Supinator A | Forearm supination.
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| Supinator N | Radial (deep branch) (C7, C8).
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| Extensor Indicis PA | Posterior surface of distal third of ulna and interosseous membrane.
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| Extensor Indicis DA | Extensor expansion of 2nd digit.
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| Extensor Indicis A | MP, DIP, PIP extension of 2nd digit enabling its independent extension. Wrist extension.
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| Extensor Indicis N | Radial (posterior interosseous) (C7, C8).
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| Abductor Pollicis Longus PA | Posterior surface of proximal halves of ulna, radius, and interosseous membrane.
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| Abductor Pollicis Longus DA | Base of 1st metacarpal.
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| Abductor Pollicis Longus A | CM abduction and extension of 1st digit.
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| Abductor Pollicis Longus N | Radial (posterior interosseous) (C7, C8).
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| Extensor Pollicis Longus PA | Posterior surface of middle 1/3rd of ulna and interosseous membrane.
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| Extensor Pollicis Longus DA | Dorsal aspect of base of distal phalanx of 1st digit.
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| Extensor Pollicis Longus A | CMC, MP, IP extension of 1st digit.
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| Extensor Pollicis Longus N | Radial (posterior interosseous) (C7, C8).
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Created by:
txst fall 2009
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