Muscle O.i.n.a's Netter

Front 1

Tensor Fascia Latae

Back 1

O: ASIS and iliac crest.
I: Iliotibial band.
N: Superior gluteal n. (L4, L5).
A: Abducts, internally rotates, and flexes hip. Can assist with knee extension.

Front 2

Gluteus Maximus

Back 2

O: Ilium posterior to posterior gluteal line, dorsal surface of sacrum and coccyx, and sacrotuberous ligament.
I: ITB and gluteal tuberosity of femur.
N: Inferior gluteal n. (S1, S2).
A: Extends and externally rotates hip.

Front 3

Gluteus Medius

Back 3

O: External surface of ilium between anterior and posterior gluteal lines.
I: Greater trochanter of femur.
N: Superior gluteal n. (L5).
A: Anterior fibers: abduct, flex, and internally rotate the hip.
Posterior fibers: abduct, extend, and externally rotate the hip.

Front 4

Gluteus Minimus

Back 4

O: External surface of ilium between anterior and inferior gluteal lines.
I: Greater trochanter of femur.
N: Superior gluteal n. (L5).
A: Abducts and internally rotates hip

Front 5

Piriformis

Back 5

O: Anterior surface of sacrum and sacrotuberous ligament.
I: Greater trochanter of femur.
N: Nerve to Piriformis (S1).
A: Externally rotates hip; stabilizes femoral head in acetabulum.

Front 6

Iliacus

Back 6

O: Iliac crest, iliac fossa, ala of sacrum, and anterior sacroiliac ligaments.
I: Lesser trochanter of femur (joins psoas major).
N: Femoral n. (L2).
A: Flexes hip.

Front 7

• Psoas

Back 7

O: Sides of T12-L5 and IV discs, TP of all lumbar vertebrae.
I: Lesser trochanter of femur.
N: VR L1, L2.
A: Flexes hip.

Front 8

• Sartorius

Back 8

0: ASIS.
I: Superior surface of medial tibia.
A: Hip flexion, abduction, and external rotation, knee flexion, and tibial internal rotation.
N: Femoral (L2, L3).

Front 9

• Gracilis

Back 9

0: Body and inferior ramus of pubis.
I: Superior surface of medial tibia.
A: Hip adduction, knee flexion and tibial internal rotation.
N: Obturator (L2).

Front 10

• Adductor longus

Back 10

0: Body of pubis inferior to pubic crest.
I: Middle 1/3rd of linea aspera.
A: Hip adduction and flexion.
N: Obturator (L3).

Front 11

• Adductor brevis

Back 11

0: Body and inferior ramus of pubis.
I: Pectineal line of femur and proximal linea aspera.
A: Hip adduction and flexion.
N: Obturator (L3).

Front 12

• Adductor magnus

Back 12

0: Hamstring portion: Ischial tuberosity.
Adductor portion: Ramus of ischium and inferior ramus of pubis.
I: Hamstring portion: Adductor tubercle.
Adductor portion: Gluteal tuberosity, linea aspera, medial supracondylar line.
A: Hamstring portion: Hip adduction and extension.
Adductor portion: Hip adduction and flexion.
N: Hamstring portion: Tibial (L4).
Adductor portion: Obturator (L3, L4).

Front 13

• Quadriceps femoris

Back 13

o Rectus femoris
o Vastus medialis
o Vastus intermedius
o Vastus lateralis

Front 14

o Rectus femoris

Back 14

0: AIlS.
I: Patella, tibial tubercle via patellar ligament.
A: Hip flexion, knee extension.
N: Femoral (L3, L4).

Front 15

o Vastus intermedius

Back 15

0: Anterior and lateral femur.
I: Patella, tibial tubercle via patellar ligament.
A: Knee extension.
N: Femoral (L3, L4).

Front 16

o Vastus lateralis

Back 16

0: Linea aspera (lateral lip), greater trochanter.
I: Patella, tibial tubercle via patellar ligament.
A: Knee extension.
N: Femoral (L3, L4).

Front 17

o Vastus medialis

Back 17

0: Linea aspera (medial lip), intertrochanteric line.
I: Patella, tibial tubercle via patellar ligament.
A: Knee extension.
N: Femoral (L3, L4).

Front 18

• Hamstrings

Back 18

o Biceps femoris long head
o Biceps femoris short head
o Semitendinosus
o Semimembranosus

Front 19

o Biceps femoris long head

Back 19

0: Ischial tuberosity.
I: Head of fibula.
A: Hip extension, knee flexion.
N: Tibial (S1).

Front 20

o Biceps femoris short head

Back 20

0: Linea aspera, lateral supracondylar line.
I: Head of fibula.
A: Knee flexion.
N: Common peroneal (S1).

Front 21

o Semitendinosus

Back 21

0: Ischial tuberosity.
I: Superior surface of medial tibia.
A: Knee flexion, tibial internal rotation, and hip extension.
N: Tibial (L5, S1).

Front 22

o Semimembranosus

Back 22

0: Ischial tuberosity.
I: Posterior surface of medial tibial condyle, medial meniscus.
A: Knee flexion, tibial internal rotation, and hip extension.
N: Tibial (L5, S1).

Front 23

• Gastrocnemius

Back 23

0: Medial head: medial femoral condyle. Lateral head: lateral femoral condyle.
I: Calcaneus via calcaneal tendon.
A: Ankle plantarflexion.
N: Tibial (S1, S2).

Front 24

• Soleus

Back 24

0: Head and superior surface of posterior fibula, soleal line and medial border of tibia.
I: Calcaneus via calcaneal tendon.
A: Ankle plantarflexion.
N: Tibial (S1, S2).

Front 25

• Popliteus

Back 25

0: Lateral condyle of femur.
I: Posterior tibia superior to soleal line.
A: Tibial internal rotation to “unlock” knee, knee flexion.
N: Tibial (L4, L5, S1).

Front 26

• Tibialis anterior

Back 26

0: Lateral condyle and superior lateral tibia, interosseous membrane.
I: Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal.
A: Ankle dorsiflexion, foot inversion.
N: Deep peroneal (L4).

Front 27

• Extensor digitorum longus (EDL)

Back 27

0: Lateral tibial condyle, superior medial fibula, interosseous membrane.
I: Middle and distal phalanges 2nd – 5th digits.
A: MP and IP extension of 2nd – 5th digits, ankle dorsiflexion.
N: Deep peroneal (L5, S1).

Front 28

• Extensor hallicus longus (EHL)

Back 28

0: Middle surface of anterior fibula, interosseous membrane.
I: Distal phalanx of hallux.
A: MP and IP extension of hallux, ankle dorsiflexion.
N: Deep peroneal (L5).

Front 29

• Fibularis longus (aka Peroneus longus)

Back 29

0: Head and superior lateral surface of fibula.
I: Base of 1st metatarsal, medial cuneiform.
A: Foot eversion, ankle plantarflexion.
N: Superficial peroneal (L5, S1).

Front 30

• Fibularis brevis (aka Peroneus brevis)

Back 30

0: Inferior lateral surface of fibula.
I: Tuberosity of base of 5th metatarsal.
A: Foot eversion, ankle plantarflexion.
N: Superficial peroneal (L5, S1).

Front 31

• Fibularis tertius (aka Peroneus tertius)

Back 31

0: Anterior inferior fibula and interosseous membrane.
I: Dorsal surface of base of 5th metatarsal.
A: Ankle dorsiflexion, foot eversion.
N: Deep peroneal (L5, S1).

Front 32

• Tibialis posterior

Back 32

0: Posterior surface of fibula, posterior surface of tibia inferior to soleal line, interosseous membrane.
I: Navicular tuberosity, 3 cuneiforms, cuboid, bases of 2nd - 4th metatarsals.
A: Ankle plantarflexion, foot inversion.
N: Tibial (L4, L5).

Front 33

• Flexor digitorum longus (FDL)

Back 33

0: Posterior surface of tibia inferior to soleal line.
I: Base of distal phalanges of 2nd – 5th digits.
A: MP, PIP, DIP flexion 2nd – 5th digits, ankle plantarflexion.
N: Tibial (S2, S3).

Front 34

• Flexor hallicus longus (FHL)

Back 34

0: Inferior posterior fibula, inferior interosseous membrane.
I: Base of distal phalanx of hallux.
A: MP and IP hallux flexion, ankle plantar flexion.
N: Tibial (S2, S3).

Front 35

Femur

Back 35

• Head
• Neck
• Greater trochanter
• Lesser trochanter
• Pectineal line
• Gluteal tuberosity
• Shaft
• Linea aspera
o Medial lip
o Lateral lip
• Lateral epicondyle
• Medial epicondyle
• Lateral condyle
• Medial condyle
• Adductor tubercle

Front 36

Patella

Back 36

tendons

Front 37

Tibia

Back 37

• Medial condyle
• Lateral condyle
• Tibial tuberosity
• Gerdy’s tubercle
• Pes anserine
• Soleal line
• Medial malleolus
• Fibular notch

Front 38

Fibula

Back 38

• Head
• Neck
• Lateral malleolus

Front 39

Foot

Back 39

• Talus
o Head
o Trochlea
• Calcaneus
o Calcaneal tuberosity
o Sustentaculum tali
• Navicular
• Cuboid
• Cuneiforms
o Lateral
o Intermediate
o Medial
• Metatarsals
o Base
o Shaft
o Head
o Tuberosity of 5th metatarsal
• Phalanges
o Base
o Shaft
o Head