4th Layer of Foot Muscles

Question 1

Plantar Interossei (3)

Answer 1

O: Plantar Aspect of Medial Sides of Shafts of Metatarsals 3-5
I: Medial Sides of Bases of Phalanges of 3rd-5th Digits
N: Lateral Plantar Nerve (S2, S3)
A: Adduct Digits 3-5 and Flex MTP Joints

Question 2

Dorsal Interossei (4)

Answer 2

O: Adjacent sides of Shafts of Metatarsals 1-5
I: 1st- Medial Side of Proximal Phalanx of 2nd Digit; 2nd-4th-Lateral sides of 2nd-4th Digits
N: Lateral Plantar Nerve (S2, S3)
A: Abduct Digits 2-4 and Flex MTP Joints