AOI & Stuff - Labs 6-10

Iliopsoas (iliacus & psoas major)

Group: anterior & medial hip

A: flexion of thigh

O: Iliac fossa, ala of sacrum, & vertebrae (T12-L5)

I: lesser trochanter (femur)

Sartorius

Group: anterior & medial hip

A: flexion of thigh & lateral rotation of femur

O: Anterior superior iliac spine

I: proximal shaft if tibia

Adductor magnus

Group: medial thigh

A: adduction & extension of thigh

O: pubis & ischium

I: Gluteal tuberosity & linea aspera (femur)

Obturator externus

Group: medial thigh

A: lateral rotation of thigh

O: inferior edge of obturator foramen

I: Greater trochanter of femur

Adductor longus & brevis

Group: medial thigh

A: adduction of thigh

O: body & inferior ramus (pubis)

I: linea aspera

Pectineus

Group: medial thigh

A: adducts, flexes, & medially rotates thigh

O: body & ramus of the pubis

I: proximal shaft of femur

Gracilis

Group: medial thigh

A: adduction of thigh; flexion of thigh; flexion of leg

O: body & ramus of the pubis

I: proximal shaft of tibia

Rectus femoris (quadriceps)

Group: anterior thigh

A: extension of leg; flexion of thigh

O: anterior inferior iliac spine

I: patella & tibial tuberosity

Vastus lateralis (quadriceps)

Group: anterior thigh

A: extension of leg

O: greater trochanter (femur)

I: patella & tibial tuberosity

Vastus medialis (quadtriceps)

Group: anterior thigh

A: extension of leg

O: intertrochanteric line & linea aspera (femur)

I: patella & tibial tuberosity

Vastus intermedius (qaudriceps)

Group: anterior thigh)

A: extension of leg

O: anterolateral shaft of femur

I: patella & tibial tuberosity

Tensor Fasciae latae

Group: anterior thigh

A: flexion, abduction, & medial rotation of thigh

O: anterior superior iliac spine

I: iliotibial tract

Gluteus medius

Group: gluteal muscles

A: abduction of thigh

O: ala (ilium)

I: greater trochanter (femur)

Gluteus maximus

Group: gluteal muscles

A: extension, lateral rotation, & abduction of thigh

O: ala (ilium); sacrum; coccyx

I: gluteul tuberosity (femur)

Biceps femoris (hamstrings)

Group: posterior thigh

A: flexion of leg; extension of thigh

O: ischial tuberosity

I: head of fibula

Semitendinosus

Group: posterior thigh

A: flexion of leg; extension of thigh

O: ischial tuberosity

I: proximal shaft if tibia

Semimembranosus

Group: posterior thigh

A: flexion of leg; extension of thigh

O: ischial tuberosity

I: medial condyle (tibia)

Tibialis anterior

Group: anterior lower leg

A: dorsiflexes & inverts foot

O: lateral condyle shaft (tibia); interosseus membrane

I: metatarsal 1; Medial cuneiform

Extensor digitorum longus

Group: anterior lower leg

A: extension of toes 2-5; dorsiflexion & eversion of foot

O: lateral condyle shaft (tibia); interosseus membrane

I: distal phalanges 2-5

Extensor hallucis longus

Group: anterior lower leg

A: extension of great toe; dorsiflexion & inversion of foot

O: fibula; interosseus membrane

I: distal phalanx of the toe

Fibularis (peroneus) tertius

Group: anterior lower leg

A: dorsiflexion & eversion of the foot

O: fibula; interosseus membrane

I: metatarsal 5

Fibularis (peroneus) brevis

Group: lateral lower leg

A: plantar flexion & eversion of foot

O: distal shaft of fibula

I: metatarsal 5

Fibularis (peroneus) longus

Group: lateral lower leg

A: plantar flexion & eversion of foot

O: proximal shaft of fibula

I: metatarsal 1; medial cuneiform

Gastrocnemius (medial & lateral head)

Group: posterior superficial lower leg

A: plantar flexion of foot; flexion of leg

O: medial & lateral condyles (femur)

I: calcaneus

Plantaris

Group: posterior superficial lower leg

A: plantar flexion of foot; flexion of leg

O: distal shaft of femur

I: calcaneus

Soleus

Group: posterior superficial lower leg

A: plantar flexion of foot

O: proximal shafts of tibia & fibula

I: calcaneus

Flexor digitorum longus

Group: posterior deep lower leg

A: plantar flexion & inversion of foot; flexion of toes 2-5

O: mid-shaft of tibia

I: distal phalanges 2-5

Flexor hallucis longus

Group: posterior deep lower leg

A: plantar flexion & inversion of foot; flexion of toes great toe

O: posterior shaft of fibula; interosseus membrane

I: distal phalanges great toe