| Flexor hallucis longus muscle | |
|---|---|
 Flexor hallucis longus. Seen from behind. | |
 The mucous sheaths of the tendons around the ankle. Medial aspect. (Tendon of flexor hallucis longus labeled at bottom left.) | |
| Details | |
| Origin | Fibula, posterior aspect of middle 1/3 |
| Insertion | Plantar surface; base of distal phalanx of hallux |
| Artery | (Muscular branch of peroneal artery (peroneal branch of the posterior tibial artery) |
| Nerve | Tibial nerve, S2 and S3 [1] |
| Actions | Flexes all joints of the big toe, plantar flexion of the ankle joint |
| Antagonist | Extensor hallucis longus muscle |
| Identifiers | |
| Latin | musculus flexor hallucis longus |
| Acronym(s) | FHL |
| TA98 | A04.7.02.053 |
| TA2 | 2668 |
| FMA | 22593 |
| Anatomical terms of muscle | |
The flexor hallucis longus muscle (FHL) attaches to the plantar surface of phalanx of the great toe and is responsible for flexing that toe. The FHL is one of the three deep muscles of the posterior compartment of the leg, the others being the flexor digitorum longus and the tibialis posterior. The tibialis posterior is the most powerful of these deep muscles. All three muscles are innervated by the tibial nerve which comprises half of the sciatic nerve.[2]
- ^ Aids to the Examination of the Peripheral Nervous System, 5th edition
- ^ "Peripheral Nerve Injury". www.hopkinsmedicine.org. Retrieved 20 October 2020.