HLSC2P96 - unit 3 OIAI

Tensor Fasciae latae

Origin: iliac crest & ASIS

Insertion: iliotibial tract

Action: hip abduction, medial rotation, knee extension

Innervation: superior gluteal nerve

gluteus minimus

Origin: Gluteal surface of ilium (between anterior and inferior gluteal lines)

Insertion: greater trochanter

Action: abduction, medial rotation

Innervation: superior gluteal nerve

gluteus medius

Origin: Gluteal surface of ilium (between anterior and posterior gluteal lines)

Insertion: greater trochanter

Action: abduction, medial rotation

Innervation: superior gluteal nerve

Gluteus maximus

Origin: iliac crest, sacrum, coccyx & thoracolumbar fascia

Insertion: gluteal tuberosity

Action: extension and lateral rotation

Innervation: inferior gluteal nerve

piriformis

Origin: anterolateral sacrum

Insertion: greater trochanter

Action: lateral rotation & abduction

Innervation: sacral nerves

obturator internus

Origin: medial margin of obturator foramen

Insertion: greater trochanter

Action: lateral rotation, abduction

Innervation: obturator nerve

iliotibial tract

Origin: iliac crest

Insertion: lateral condyle of tibia

Action: hip extension, lateral rotation

superior gemellus

Origin: ischial spine

Insertion: greater trochanter

Action: lateral rotation, abduction

Innervation: nerves to obturator internus and quadratus femoris

quadratus femorus

Origin: ischial tuberosity

Insertion: intertrochanteric crest

Action: lateral rotation

Innervation: nerve to quadratus femoris

obturator externus

Origin: medial margin of obturator foramen

Insertion: greater trochanter

Action: lateral rotation, abduction

Innervation: obturator nerve

adductor magnus

Origin: inferior ramus of pubis and ischial tuberosity

Insertion: Linea aspera & adductor tubercle

Action: adduction, flexion, extension

Innervation: obturator & sciatic nerves

adductor brevis

Origin: inferior ramus of pubis

Insertion: Linea aspera

Action: adduction, flexion

Innervation: obturator nerve

adductor longus

Origin: inferior ramus of pubis

Insertion: linea aspera

Action: adduction, flexion, medial rotation

Innervation: obturator nerve

gracillis

Origin:

Insertion:

Action: adduction, medial rotation of hip. flexion, medial rotation of knee

Innervation: obturator nerve

pectineus

Origin: superior pubic ramus

Insertion: pectineal line

Action: flexion & adduction

Innervation: femoral nerve

vastus intermedius

Origin: Linea aspera

Insertion: tibial tuberosity

Action: extension of the knee

Innervation: femoral nerve

vastus medialis

Origin: linea aspera

Insertion: tibial tuberosity

Action: extension of the knee

Innervation: femoral nerve

vastus lateralis

Origin: linea aspera

Insertion: tibial tuberosity

Action: extension of knee

Innervation: femoral nerve

rectus femoris

Origin: AIIS

Insertion: tibial tuberosity

Action: extension at knee, flexion of hip

Innervation: femoral nerve

sartorius

Origin: ASIS

Insertion: medial surface of tibia

Action: flexion of hip and knee, abduction of hip, lateral rotation

Innervation: femoral nerve

popliteus

Origin: lateral condyle of femur

Insertion: posterior surface proximal tibia

Action: medial rotation, knee flexion

Innervation: tibial nerve

semimembranosis

Origin: ischial tuberosity

Insertion: posterior medial tibial condyle

Action: extension of hip, flexion of knee

Innervation: sciatic nerve

semitendinosis

Origin: ischial tuberosity

Insertion: proximal medial tibia

Action: extension of hip, flexion of knee

Innervation: sciatic nerve

biceps femoris (short head)

Origin: linea aspera

Insertion: head of fibula & lateral tibia

Action: flexion of knee

Innervation: sciatic nerve

biceps femoris (long head)

Origin: ischial tuberosity

Insertion: head of fibula & lateral tibia

Action: extension of hip, flexion of knee

Innervation: sciatic nerve

extensor hallucis longus

Origin: anterior fibula

Insertion: distal phalanx

Action: dorsiflexion of ankle, extension of big toe

Innervation: deep fibular nerve

extensor digitorum longus

Origin: lateral condyle of tibia and anterior fibula

Insertion: superior surfaces phalanges 2-5

Action: dorsiflexion of ankle, extension of toes 2-5

Innervation: deep fibular nerve

tibialis anterior

Origin: lateral condyle & shaft of tibia

Insertion: base of 1st metatarsal and medial cuneiform

Action: dorsiflexion & inversion of ankle

Innervation: deep fibular nerve

tibialis posterior

Origin: shaft of the tibia and fibula

Insertion: navicular, cuneiform, cuboid, 2nd, 3rd, 4th metatarsals

Action: inversion & plantar flexion

Innervation: tibial nerve

flexor digitorum longus

Origin: posteromedial tibia

Insertion: distal phalanges 2-5

Action: plantarflexion of ankle, flexion of digits 2-5

Innervation: tibial nerve

flexor hallucis longus

Origin: posterior tibia

Insertion: distal phalanx of big toe

Action: flexion of big toe, plantarflexion of ankle

Innervation: tibial nerve

soleus

Origin: head of fibula and tibia

Insertion: calcaneous

Action: plantarflexion

Innervation: tibial nerve

plantaris

Origin: lateral supracondylar ridge of femur

Insertion: calcaneous

Action: flexion of knee, plantarflexion of ankle

Innervation: tibial nerve

gastrocnemius

Origin: femoral condyles

Insertion: calcaneous

Action: flexion of knee and plantar flexion

Innervation: tibial nerve

fibularis brevis

Origin: midlateral fibula

Insertion: base of 5th metatarsal

Action: plantarflexion

Innervation: superficial fibular nerve

fibularis longus

Origin: Head of fibula, lateral shaft of fibula

Insertion: base of 1st metatarsap & medial cuniform

Action: plantarflexion & eversion

Innervation: superficial fibular nerve

Dorsal interossei

Origin: sides of metatarsals

Insertion: medial & lateral sides of 2nd digit, lateral sides of digits 3-4

Action: abduction of does 3,4

Innervation: lateral plantar nerve

plantar interossei

Origin: bases & medial sides of metatarsals

Insertion: medial side of toes 3-5

Action: adduction of toes 3-5

Innervation: lateral plantar nerve

flexor hallucis brevis

Origin: cuboid & lateral cuneform

Insertion: proximal phalanx of 1st digit

Action: flexion of 1st metatarsophalangeal joint

Innervation: medial plantar nerve

Adductor hallucis

Origin: base of metatarsals 2-5 and plantar ligaments

Insertion: proximal phalanx of 5th digit

Action: adduction & flexion of metatarsal phalangeal joints

Innervation: Lateral plantar nerve

flexor digiti minimi brevis

Origin: base of 5th metatarsal

Insertion: lateral proximal phalanx of 5th digit

Action: flexion of 5th metatarsophalangeal joint

Innervation: lateral plantar nerve

lumbricals

Origin: tendons of flexor digitorum longus

Insertion: extensor digitorum longus

Action: flexion of metatarsophalangeal joints, extension of interphalangeal jonts

Innervation: medial& lateral plantar nerves

abductor hallucis

Origin: calcaneus

Insertion: 1st proximal phalanx

Action: abduction of 1st metatarsophalangeal joint

Innervation: medial plantar nerve

Flexor digitorum brevis

Origin: calcaneus

Insertion: sides of middle phalanges 2-5

Action: flexion of proximal interphalangeal joint

Innervation: medial plantar nerve

abductor digiti minimi

Origin: calcaneus

Insertion: lateral proximal phalanx of 5th digit

Action: abduction, flexion of 5th metatarsophalangeal joint

Innervation: lateral plantar nerve

extensor digitorum brevis

Origin: calcaneus

Insertion: dorsal surface of digits 2-4

Action: extension at metatarsophalangeal joints

Innervation: deep fibular nerve

extensor hallucis brevis

Origin: calcaneus

Insertion: proximal phalanx of thumb

Action: extension of thumb

Innervation: deep fibular nerve

quadratus plantae

Origin: calcaneus

Insertion: tendon of flexor digitorum longus

Action: toe flexion

Innervation: plantar nerve