Anatomy & Physiology: Muscles—Plantaris.
Structure.
- Origin: femur superior to lateral condyle.
- Insertion: calcaneus via Achilles tendon.
Function.
- Concentric action: accelerates plantar flexion.
- Reverse mover action: plantarflexion inversion/supination of talus at subtalar joint.
- Eccentric action: decelerates ankle dorsiflexion.
- Isometric action: stabilization of foot and ankle.
- Innervation: tibial nerve.
- Arterial supply: sural branches of popliteal artery.
Clinical Significance.
More.
- https://www.anatomynext.com/plantaris/
- https://www.youtube.com/watch?v=OWhZVCk2TKA
- https://www.youtube.com/watch?v=8WpuojWvyzY
- https://www.kenhub.com/en/videos/plantaris-muscle-functions-3d
Plantaris. 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.
