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Medical Term:

fibularis tertius (muscle)


Definition: origin, in common with musculus extensor digitorum longus; insertion, dorsum of base of fifth metatarsal bone; nerve supply, deep branch of peroneal; action, assists in dorsiflexion and eversion of foot.

Synonym(s): musculus fibularis tertiusTA, musculus peroneus tertius, peroneus tertius (muscle), third peroneal muscle