Lumbrical Muscles of the Foot

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** A group muscles in the sole of the foot that originate from the tendons of the flexor digitorum longus muscle and attach to the medial bases of the proximal phalanges and the extensor expansion of the second through fifth digits; they function to flex and adduct the lateral four toes at the metatarsophalangeal joints and extend them at the interphalangeal joints.

**Synonyms:** - LUMBRICAL MUSCLES OF THE FOOT