| Peroneus tertius | |
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| Muscles of the front of the leg. (peroneus tertius visible at center left) | |
| Latin | musculus peroneus tertius |
| Gray's | subject #129 482 |
| Origin | distal anterior surface of the fibula |
| Insertion | dorsal surface of metatarsal 5 |
| Artery | anterior tibial artery |
| Nerve | deep fibular nerve |
| Actions | dorsiflexion and eversion of the foot |
The peroneus tertius (also known as fibularis tertius) is a muscle of the human body located in the lower limb.
The muscle arises from the lower third of the anterior surface of the fibula; from the lower part of the interosseous membrane; and from an intermuscular septum between it and the peroneus brevis.
The tendon, after passing under the superior extensor retinaculum of foot and inferior extensor retinaculum of foot in the same canal as the extensor digitorum longus, is inserted into the dorsal surface of the base of the metatarsal bone of the 5th digit.
It is innervated by the deep fibular nerve.
Its action is that of weak dorsiflexion of the ankle joint and to evert the foot at the ankle joint.
Gallery
 Bones of the right foot. Dorsal surface. |
 The mucous sheaths of the tendons around the ankle. Lateral aspect. |
The M. Fibularis Tertius is not always present
See also
External links
- LUC pert
- -1288372144 at GPnotebook
- SUNY Labs 15:st-0411 - "The Leg: Muscles"
- Fibularis+tertius at eMedicine Dictionary
- PTCentral
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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