Peroneus tertius muscle | definition of Peroneus tertius muscle by Medical dictionary
peroneus tertius (redirected from Peroneus tertius muscle)
The muscle arising from the anterior portion of the distal one third of the tibia and the adjacent portion of the interosseous membrane and attaching on the dorsal surface of the fifth metatarsal. The peroneus tertius is a secondary contributor to ankle dorsiflexion and eversion. This muscle is absent in a significant proportion of the population.
peroneus tertius small extrinsic foot (forms lateral part of extensor digitorum brevis), within anterior compartment of lower leg
origin continuous with lower part of origin of extensor digitorum longus, i.e. distal one-quarter of medial surface of fibula and adjacent interosseous membrane
insertion dorsal area of proximal half of fifth metatarsal
nerve supply deep peroneal nerve
action foot eversion at subtalar joint; ankle joint dorsiflexion; eversion of the foot and dorsiflexion of the ankle
References in periodicals archive
The significance of Peroneus Tertius muscle
in ankle injuries; a prospective study.
Horcholle-Bossavit G, Jami L, Petit R, et al: Ensemble discharge from Golgi tendon organs of cat peroneus tertius muscle