Anatomy & Physiology: Muscles—Flexor Digitorum Longus.
Structure.
- Origin: posterior surface of tibia.
- Insertion: distal phalanges of toes II-V.
Function.
- Concentric action: ankle plantar flexion, flexion of distal and middle phalanges of toes at interphalangeal joints and proximal phalanx of each toe at metatarsophalangeal joint.
- Reverse mover action: plantarflexion; inversion/supination of talus at subtalar joint; flex metatarsals at MTP and also proximal phalanges at IP.
- Eccentric action: controls/restrains/decelerates ankle dorsiflexion; eversion; extension of toes 2-5 at MTP and IP.
- Isometric action: stabilizes ankle, subtalar joint, and MTP and IP joints.
- Innervation: tibial nerve.
- Arterial supply: posterior tibial artery.
Clinical Significance.
More.
- https://www.anatomynext.com/flexor-digitorum-longus/
- https://www.youtube.com/watch?v=WUS5BUB3fgM
- https://www.youtube.com/watch?v=LXIe209QYdI
- https://www.youtube.com/watch?v=BtYpgkyF-Gk
Flexor digitorum longus pedis. Used with permission by 3D4Medical.
References
Biel, A. (2015). Trail guide to the body: A hands-on guide to locating muscles, bones and more.
Clark, M., Lucett, S., Sutton, B. G., & National Academy of Sports Medicine. (2014). NASM essentials of corrective exercise training. Burlington, MA: Jones & Bartlett Learning.
Jenkins, G., & Tortora, G. J. (2012). Anatomy and Physiology: From Science to Life, 3rd Edition International Stu. John Wiley & Sons.
Muscolino, J. E. (2017). The muscular system manual: The skeletal muscles of the human body.
