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Muscles which produce MCP joint extension
Thumb:
Extensor Pollicis Brevis
and
Extensor Pollicis Longus
Index:
Extensor Indicis
Index, middle, ring and small:
Extensor Digitorum Communis
Small:
Extensor Digiti Minimi
Anatomy Home Page
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American Society for Surgery of the Hand assh.org
The Best Resource For Your Hands, Period.
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