LE Muscle Action Flashcards
Tensor fascia latae
Abduct thigh (weak) Flex leg (weak) Laterally rotates flexed leg (weak) Stabilize torso on hip joint (weak)
Gluteus Maximus
Laterally rotate thigh
Extend thigh
Abduct thigh
Stabilize torso
Gluteus medius
Abduct extended thigh
Stabilize torso
Medially rotates flexed thigh
Piriformis
Laterally rotate thigh
Abduct flexed leg
Obturator internus
Abduct thigh
Laterally rotate thigh
Superior gemellus
Assist with lateral rotation of thigh
Inferior gemellus
Assist in lateral rotation of thigh
Obturator externus
Laterally rotate thigh at hip
Quadratus femoris
Literally rotate thigh
Iliopsoas
Flex thigh at hip
Iliacus
Flex thigh at hip
Psoas major
Flex trunk
Literally flex trunk
Pectineus
Flex hip
Adduct hip
Sartorius
Flex hip (weak) Abduct hip (weak) Laterally rotate hip (weak) Flex knee (weak) Medially rotate knee (weak) Stabilize hip joint and lower limb
Rectus femoris
Flex thigh at hip
Extend leg at knee
Vastus medialis
Extend leg at knee
Vastus medialis
Extend leg at hip
Vastus lateralis
Extend leg at knee
Articularis genu
Aids knee extension by elevating synovial capsule
Pectineus
Flex hip
Adduct hip
Gracilis
Adduct thigh
Flex thigh at hip
Flex knee
Medially rotate knee
Adductor longus
Adduct thigh at hip
Flex thigh at hip
Hip rotation (controversial)
Adductor brevis
Adduct hip
Flex thigh at hip
Hip rotation (controversial)
Adductor Magnus medial head
Adduct thigh at hip
Flex thigh at hip
Adductor Magnus lateral head
Adduct hip
Extend hip
Obturator externus
Laterally rotate thigh
Adductor Magnus medial head
Adduct hip
Flex hip
Adductor Magnus lateral head
Adducts hip
Extend hip
Biceps femoris long head
Extend hip
Flex knee
Laterally rotate flexed leg
Biceps femoris short head
Flex knee
Laterally rotate flexed leg
Semimembranosus
Extend hip
Flex knee
Medially rotate flexed knee
Semitendinosus
Extend hip
Flex knee
Medially rotate flexed knee
Stabilize hip
Plantaris
Plantarflexion Flex knee (weak)
Gastrocnemius
Plantarflexion
Flex knee
Soleus
Plantarflexion
Popliteus
Medial rotation of tibia (unlocks knee)
Tibialis posterior
Inversion
Plantarflexion
Flexor digitorum longus
Flex toes 2-5
Plantarflexion
Inversion (weak)
Flexor hallucis longus
Flex big toe
Plantarflexion
Tibialis anterior
Invert foot
Dorsiflexion
Extensor digitorum longus
Extend toes
Dorsiflexion
Fibularis tertius
Eversion (weak)
Dorsiflexion
Extensor hallucis longus
Extend big toe
Dorsiflexion
Fibularis longus
Evert foot
Plantarflexion (weak)
Support transverse arch
Fibularis brevis
Eversion
Plantarflexion (weak)
Extensor digitorum brevis
Extend toes
Extensor hallucis brevis
Extend hallux
Abductor hallucis
Flex hallux
Support medial longitudinal arch
Abduct hallux?
Flexor digitorum brevis
Flex toes 2-5
Metatarsalphalangeal joints
Proximal interphalangeal joints
Abductor digiti quinti
Flex little toe
Abduct little toe
Support lateral longitudinal arch
Flexor digitorum accessorius
Aids in flexion of toes 2-5
Lumbercals
Aids in flexion of toes at metatarsalphalageal joints
Aids in extension at interphalangeal joints
Flexor hallucis brevis
Flex hallux
Adductor hallucis oblique head
Flex hallux
Adduct hallux?
Adductor hallucis transverse head
Adduct hallux?
Support transverse arch
Flexor digiti quinti
Flex little toe
Plantar interossei
Aduict toes?
Support transverse arch
Interossei dorsalis pedis
Abduct toes?
Support transverse arch