Plantar Interossei

Question 1

Origin

Answer 1

Metatarsal bones # 3 - 5

Question 2

Insertion

Answer 2

bases of the proximal phalanges (and dorsal digital expansion). The first is inserted into the medial side of the 3rd toe; the other two are inserted into the medial sides of the 4th & 5th toes

Question 3

Function

Answer 3

• ADD of toes #3-5 at MTP joints
• FLEX of toes #3-5 at MTP joints
• EXT of toes #3-5 at IP joints

Question 4

Nerve

Answer 4

Lateral plantar nerve