|
Muscle |
Innervation |
Origin |
Insertion |
Action |
Nerve Root |
|
Dorsal layer |
|
|
|
|
|
| 1 |
Extensor digitorum brevis(EDB) |
Deep peroneal |
superolateral calcaneus |
base of proximal phalanges |
extend |
|
|
First Plantar Layer |
|
|
|
|
|
| 1 |
Abductor hallucis |
med plantar |
calcaneal tuberosity |
base of great toe prox phalanx |
abduct great toe |
|
| 2 |
Flexor digitorum brevus(FDB) |
med plantar |
calcaneal tuberosity |
distal phalanges of 2nd-5th toes |
flex toes |
|
| 3 |
Abductor digiti minimi |
lat plantar |
calcaneal tuberosity |
base fo 5th toe |
abduct small toe |
|
|
Second Plantar Layer |
|
|
|
|
|
| 1 |
Quadratus plantae |
lat plantar |
med & lat calcaneus |
FDL tendon |
helps flex distal phalanges |
|
| 2 |
Lumbricals |
med & lat plantar |
FDL tendon |
EDL tendon |
flex MTP, extend IP |
|
| 3 |
FDL & FHL |
tibial |
tibia/fibula |
distal phalanges of digits |
flex toes/invert foot |
|
|
Third Plantar Layer |
|
|
|
|
|
| 1 |
Flexor hallucis brevis(FHB) |
med plantar |
cuboid/lat cuneiform |
proximal phalanx of great toe |
flex great toe |
|
| 2 |
Adductor hallucis |
lat plantar |
oblique:2nd-4th metatarsals, Transverse:MTP |
proximal phalanx of great toe lat |
adduct great toe |
|
| 3 |
Flexor digiti minimi brevis(FDMB) |
lat plantar |
base of 5th metatarsal head |
proximal phalanx of small toe |
flex small toe |
|
|
Forth Plantar Layer |
|
|
|
|
|
| 1 |
Dorsal interosseous(DIO) |
lat plantar |
metatarsal |
dorsal extensors |
abduct |
|
| 2 |
Plantar interosseous |
lat plantar |
3rd-5th metatarsals |
proximal phalanges medially |
adduct toes |
|
| 3 |
(Peroneus longus and tibialis posterior |
superficial peroneal/tiba |
fibula/tiba |
med cuneiform/navicular |
everts/invert foot |
|
medial and lateral plantar nerves supply all the musculature of the sole of the foot. Medial plantar nerve supplies most of the sensation to the planter foot, including the great toe and the medial 3 lessor toes.
