Muscles Of The Hip, Knee And Ankle

Front 1

Back 1

Gastrocnemius

Origin:Medial Head:Posterior Surface of the medial femoral condyleLateral Head:Posterior Surface of the lateral femoral condyle

Insertion:Posterior Surface of the Calcaneus (Achilles Tendon)

Action: planter flexion

Nerve:Tibial Nerve (S1, S2)

Front 2

Back 2

Soleus

Origin:Posterior Surface of the proximal fibula and proximal 2/3 of the posterior tibial surface

Insertion:Posterior Surface of the Calcaneus (Achilles Tendon)

Action: planter flexion

Nerve:Tibial Nerve (S1, S2)

Front 3

Back 3

Plantaris

O - Lateral Linea Aspea & Oblique popliteal ligament

I - Calcaneus

A - Flexion of knee, plantar flexion of ankle

N - Tibial

Front 4

Back 4

Tibialis Posterior

AssistivePlantar Flexors

Inversion

Front 5

Back 5

FlexorDigitorum Longus

Assistive Plantar Flexors

Inversion

Front 6

Back 6

Peroneus Longus & Brevis

Assistive Plantar Flexors

Eversion

Front 7

Back 7

Flexor Hallucis Longus

Assistive Plantar Flexors

Inversion

Front 8

Back 8

Tibialis Anterior

Dorsiflexion

Inversion

Front 9

Back 9

Extensor Digitorum Longus

Dorsiflexion

Eversion

Front 10

Back 10

Peroneus Tertius

Dorsiflexion

Eversion

Front 11

Back 11

Extensor Hallucis Longus

Dorsiflexion

Inversion

Front 12

Back 12

Iliopsoas

O – Psoas Major – transverse processes, disks and bodies of T12 through L5

O – Iliacus – iliac fossa

I – Lesser trochanter

A – Hip flexion, trunk flexion, lateral flexion of spine

N – Femoral, Ventral Rami

Front 13

Back 13

Rectus Femoris

O – AIIS

I – Patella ligament/ quadriceps tendon

A – Hip flexion, Extension of the knee

N – Femoral

Front 14

Back 14

Sartorius

O - Anterior Superior Iliac Spine

I - Inferior to medial condyle of tibia

A - Flexion & Internal Rotation of the knee; Flexion, abduction, & external rotation of the hipN - Femoral

Front 15

Back 15

Semitendinosus

O - Ischial Tuberosity & Linea Aspera

I - Inferior to medial condyle of tibia

A - Flexion & Internal Rotation of Knee; Extension, Adduction & Internal rotation of hip

N - Sciatic

Front 16

Back 16

Semimembranosus

O - Ischial Tuberosity & Linea Aspera

I – Posterior Aspect of the medial condyle of tibia

A - Flexion & Internal Rotation of Knee; Extension, Adduction & Internal rotation of hip

N - Sciatic

Front 17

Back 17

Biceps Femoris

O - Ischial Tuberosity & Linea Aspera

I - Head of fibula & posterior aspect of lateral tibial condyle

A - Flexion & External Rotation of Knee; Extension, Adduction & Internal rotation of hip

N - Sciatic

Front 18

Back 18

Gluteus Maximus

O – Dorsal ilium, sacrum, & coccyx

I – Gluteal tuberosity of femur, Iliotibial tract

A – Extensor, external rotation

N – Superior Gluteal

Front 19

Back 19

Tensor fascia lata

O – Anterior aspect of iliac crest and anterior portion of iliac spine

I – Gerdy’s tubercle – Anterior aspect of Lateral tibial condyle

A – Abduction, Hip Flexion

N – Superior Gluteal

Front 20

Back 20

Gluteus medius

O – Between Anterior & Posterior gluteal lines on lateral surface of ilium

I – Lateral Aspect of Greater Trochanter

A – Abduction, anterior fibers medially rotates thigh, posterior fibers externally rotate

N – Superior Gluteal

Front 21

know OIAN for Green

Back 21

Blue: Tensor Fascia lata

Pink: Gracilis

Purple: Sartorius

Green: Pectineus

*O – Pectineal line of the pubis

*I – Lesser trochanter

*A – Hip adduction, hip flexion, internal rotation of femur

*N – Femoral / Obturator

Orange: Adductor Longus

Yellow: Adductor brevis

Red: Adductor Magnus

Front 22

Back 22

Adductor Magnus

O – Ischial and Pubic rami and iscial tuberosity

I – Linea Aspea, medial supracondylar line, adductor tubercle

A – Adduction, flexion, internal rotation, posterior portion extension of thigh

N – Obturator & Sciatic nerves

Front 23

Back 23

Adductor Longus

O – Pubis near pubis symphysis

I – Linea Aspea

A – Adduction, flexion, internal rotation

N - Obturator

Front 24

Back 24

Adductor Brevis

O – Body & Inferior ramus of pubis

I – Linea Aspea

A – Adduction, flexion, internal rotation

N - Obturator

Front 25

Back 25

Gracilis

O – Inferior ramus and body of pubis and adjacent ischial ramus

I – Anterior aspect of medial tibial condyle

A – Adduction, Flexion, & Internal Rotation

N - Obturator

Front 26

Back 26

Obturator internus

Front 27

Back 27

Obturator externus

Front 28

Back 28

Quadratus femoris

Front 29

Back 29

Gemellus superior and inferior

Front 30

Back 30

Piriformis

Front 31

Back 31

Gluteus Minimus

Front 32

Back 32

Vastus medialis

O - Intertrochanteric Line & Linea Aspea

I - Medial Aspect of Quadriceps tendon, Patella, & Anterior aspect of medial tibial condyle

A - Knee Extension

N - Femoral

Front 33

Back 33

Vastus lateralis

O - Intertrochanteric Line & Linea Aspea

I - Lateral Aspect of Quadriceps tendon & Patella, & Anterior aspect of lateral tibial condyle

A - Knee Extension

N - Femoral

Front 34

Back 34

Vastus intermedius

O - Proximal 2/3 of anterior femur

I - Inferior aspect of Quad tendon

A - Knee Extension

N - Femoral

Front 35

Back 35

Sartoris

O - Anterior Superior Iliac Spine

I - Inferior to medial condyle of tibia

A - Flexion & Internal Rotation of the knee; Flexion, abduction, & external rotation of the hipN - Femoral

Front 36

Back 36

Popliteus

O - Lateral femoral condyle

I - proximal tibia at the popliteal line

A - Internal rotation & some Flexion of knee

N - Tibial

Front 37

Back 37

Gastrocnemius

O - Medial Condyle of femur & Lateral femoral Condyle

I - Calcaneus

A - Plantar flexion of ankle & flexion of the knee N - Tibial