extensor dig·i·tor·um brev·is (d j -tôr  m br vs)n. A muscle with its origin from the dorsal surface of the calcaneus, with insertion by four tendons to those of the long extensor muscle of the toes and by a slip to the base of the proximal phalanx of the big toe, with nerve supply from the deep peroneal nerve, and whose action extends the toes. |
extensor digitorum brevis,
a muscle that flexes the three middle toes and the proximal metatarsophalangeal joint of the great toe.
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