Anatomy & Physiology: Muscles—Extensor Digitorum Brevis.
Structure.
- Origin: calcaneus and inferior extensor retinaculum.
- Insertion: tendons of extensor digitorum longus on toes II-IV and proximal phalanx of great toe.
Function.
- Concentric action: extends toes II-IV at interphalangeal joints.
- Reverse mover action: extend metatarsal at MTP, extend proximal phalanges at PIP and DIP.
- Eccentric action: controls/restrains/decelerates flexion of toes 2-4 at MTP, PIP, and DIP; flexion of metatarsals 2-4 at MTP.
- Isometric action: stabilize MTP, PIP, and DIP.
- Innervation: deep fibular (peroneal) nerve.
- Arterial supply: dorsalis pedis artery.
Clinical Significance.
More.
- https://www.anatomynext.com/extensor-digitorum-brevis/
- https://www.youtube.com/watch?v=GQvjwpXdQ38
- http://orthopaedicprinciples.com/2018/01/extensor-digitorum-brevis/
Extensor digitorum brevis 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.
