Plantar interossei muscles
|Plantar interossei muscles
The Interossei plantares. Left foot.
|Metatarsals, long plantar ligament
|Medial side of Proximal phalanges of 3rd to 5th toe
|Plantar Artery, and Dorsal Metatarsal A
|Lateral plantar nerve
|Dorsal interossei of the foot
|Musculi interossei plantares
|Anatomical terms of muscle
The three plantar interosseous muscles are unipennate, as opposed to the bipennate structure of dorsal interosseous muscles, and originate on a single metatarsal bone. The three muscles originate on the medial aspect of metatarsals III-V. The muscles cross the metatarsophalangeal joint of toes III-V so the insertions correspond with the origin and there is no crossing between toes.
The muscles then continue distally along the foot and insert in the proximal phalanges III-V. The muscles cross the metatarsophalangeal joint of toes III-V so the insertions correspond with the origin and there is no crossing between toes.
Adduction itself is not of extreme importance to the toes, but these muscles work together with the dorsal interosseous muscles in flexion of the foot. They also work together to strengthen the metatarsal arch.
- Bones of the right foot. Plantar surface.
- Muscles of the sole of the foot.
- Saladin, Kenneth (2012). Anatomy & Physiology: The Unity of Form and Function. New York, NY: McGraw-Hill. pp. 372–372, 498–499. ISBN 978-0-07-131638-5.
- O'Rahilly, Ronan. "Basic Human Anatomy". Dartmouth. Retrieved 12 December 2013.