This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (May 2015) (Learn how and when to remove this template message)
|Origin||distal anterior surface of the fibula also the interosseous membrane|
|Insertion||dorsal surface of metatarsal 5|
|Artery||anterior tibial artery|
|Nerve||deep fibular nerve|
|Actions||dorsiflexion and eversion of the foot|
|Latin||Musculus peronaeus tertius, musculus fibularis tertius|
|Anatomical terms of muscle|
The peroneus tertius muscle (also known as the fibularis tertius muscle) is a muscle of the lower limb of the human body. Its presence is variable in humans. It is likely to be an accessory muscle to bipedalism.
The peroneus tertius muscle arises from the lower third of the anterior surface of the fibula (anterior compartment of lower leg), the lower part of the interosseous membrane, and an intermuscular septum between it and the peroneus brevis muscle. The septum is sometimes called the intermuscular septum of Otto.
The tendon passes under the superior extensor retinaculum of foot and inferior extensor retinaculum of foot in the same canal as the extensor digitorum longus muscle. It may be mistaken as a fifth tendon of the extensor digitorum longus muscle. It is inserted into the medial part of the posterior surface of the shaft of the fifth metatarsal bone.
The peroneus tertius muscle is supplied by the deep fibular nerve. This is unlike the other peroneal muscles, which are innervated by the superficial fibular nerve, since the peroneus tertius is a member of the anterior compartment.
The peroneus tertius muscle may be absent in humans. It may be absent in as few as 5% of people, or as many as 72% depending on the population surveyed. It is rarely found in other primates, which has linked its function to efficient terrestrial bipedalism.
The peroneus tertius muscle may be involved in ankle injuries.
This gallery of anatomic features needs cleanup to abide by the medical manual of style.
- Salem, Abdel Halim; Abdel Kader, Ghada; Almallah, Amani A.; Hussein, Hoda H.; Abdel Badie, Ahmed; Behbehani, Nadiah; Nedham, Fatema N.; Nedham, Ayesha N.; Almarshad, Reem; Alshammari, Munirah; Amer, Hanine; Hasan, Wafa A.; Alyaseen, Farah A.; Mohammed, Elaf A. (2018-11-01). "Variations of peroneus tertius muscle in five Arab populations: A clinical study". Translational Research in Anatomy. 13: 1–6. doi:10.1016/j.tria.2018.11.001. ISSN 2214-854X.
- Zetaruk, Merrilee; Hyman, Jeff (2007-01-01), Frontera, Walter R.; Herring, Stanley A.; Micheli, Lyle J.; Silver, Julie K. (eds.), "CHAPTER 32 - Leg Injuries", Clinical Sports Medicine, Edinburgh: W.B. Saunders, pp. 441–457, doi:10.1016/b978-141602443-9.50035-0, ISBN 978-1-4160-2443-9, retrieved 2021-02-23
- Jungers, William L.; Meldrum, D. Jeffrey; Stern, Jack T. (1993-11-01). "The functional and evolutionary significance of the human peroneus tertius muscle". Journal of Human Evolution. 25 (5): 377–386. doi:10.1006/jhev.1993.1056. ISSN 0047-2484.
|Wikimedia Commons has media related to Peroneus tertius.|
|This muscle article is a stub. You can help Wikipedia by expanding it.|