fibularis tertius muscle

fib·u·la·ris ter·ti·us mus·cle

(fib-yū-lā'ris tĕr'shē-ŭs mŭs'ĕl)
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 tertius [TA] , musculus peroneus tertius, peroneus tertius muscle, third peroneal muscle.