Term
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Definition
O: Upper 2/3 of lateral supracondular ridge of humerus
I: Styloid Process of radius
Inn: Radial Nerve
Action: Flexes Forearm (semi-pronator and supinator) |
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Term
| Extensor Carpi Radialis Longus |
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Definition
O: Lower 1/3 of lateral supracondylar ridge of humerus
I: Base of 2nd metacarpal
Inn: Radial Nerve
Action: Extends and abducts hand (weak flexor off forearm) |
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Term
| Extensor Carpi Radialis Brevis |
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Definition
O: Lateral Epicondyle of Humerus
I: Base of 3rd metacarpal
Inn: Radial Nerve (deep branch)
Action: extends and abducts hand |
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Term
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Definition
O: Lateral Epicondyle fo Humerus
I: Middle and distal phalanges of digits 2-5
Inn: Radial Nerve (deep branch)
Action: Extends digits 2-5. Extends Hand. Abducts digits with extennsion. |
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Term
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Definition
O: Lateral Epicondyle of humerus
I: Ulnar side of extensor digitorum's tendon to 5th digit.
Inn: Radial Nerve
Action: Extends and abducts 5th digit |
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Term
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Definition
O: Lateral Epicondyle of humerus
I: Base of 5th Metacarpal
Inn: Radial Nerve
Action: Extends and Adducts hand |
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Term
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Definition
O: Supinator Cress and fossa of ulna. Lateral epicondyle of humerus. Radial collateral ligament.
I: Lateral, anterior, and posterior surfaces of upper 1/3 of radius.
Inn: Radial nerve
Action: Supinates forearm. |
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Term
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Definition
O: Interosseus membrane and adjacent ulna and radius of middle 1/3 of forearm
I: Base of 1st Metacarpal
Inn: radial nerve
Action: Abducts thumb and hand. Extends thumb at CMC joint. |
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Term
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Definition
O:Upper Middle 1/3 of dorsal surface of radius
I:Base of prox. Phalanx of thumb
Inn: Radial Nerve
Action: Extends proximal phalanx of thumb at MCP joint. |
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Term
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Definition
O:Lower Middle 1/3 of dorsal surface of ulna
I: Base of distal phalanx of thumb
Inn: Radial Nerve
Action: Extends distal phalanx of thumb. |
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Term
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Definition
O: Lower 1/3 of dorsal surface of ulna
I: Extensor expansion hood of index finger
Inn: Radial nerve
Action: Extends proximal phalanx at MCP joint of index finger. |
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