Plantar Interossei (Foot)

Written by Sanya Trikha

Last updated January 31, 2023 • 8 Revisions

The plantar interossei are a group of intrinsic muscles within the foot. They form the deepest layer of plantar muscles and have a unipennate shape.

  • Attachments: Originates from the medial side of metatarsals three to five. Attaches to the medial sides of the phalanges of digits three to five.
  • Actions: Adduction of the lateral three digits and flexion at the metatarsophalangeal joints.
  • Innervation: Lateral plantar nerve.
  • Blood Supply: Lateral plantar artery

    Fig 5
    The fourth layer of the plantar muscles. Note the unipennate shape of the plantar interossei, and the bipennate shape of the dorsal interossei

Premium Feature

3D Model

Premium Feature
Access this feature with premium.
Go Premium