Anatomy & Physiology: Muscles—Plantar Interossei.
Structure.
- Origin: metatarsals 3-5.
- Insertion: medial side of proximal phalanges of toes III-V.
Function.
- Concentric action: adduction and flexion of proximal metatarsophalangeal joints; extension of toes at interphalangeal joints.
- Reverse mover action: adduction of metatarsals of toes 3-5 at MTP; flexion of metatarsals at MTP; extension of proximal phalanges at PIP and DIP.
- Eccentric action: controls/restrains/decelerates abduction, extension, and flexion of toes 3-5 at MTP and IP joints.
- Isometric action: stabilizes MTP, PIP, and DIP joints.
- Innervation: lateral plantar nerve.
- Arterial supply: branches of plantar arch.
Clinical Significance.
More.
- https://www.anatomynext.com/plantar-interossei/
- https://www.youtube.com/watch?v=QKbA9RSIhmw
- https://training.releasology.com/plantar-interossei/
Plantar interossei. 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.
