Anatomy Actions

Psoas major

Flex hip joint; flex trunk

Psoas minor

minor flexion of trunk

Iliacus

Flex hip joint

Iliopsoas

flex hip joint

Gluteus maximus

Extend hip joint, laterally rotate hip

Gluteus medius

Abduct hip joint

Gluteus minimus

Abduct hip joint

Tensor fasciae latae

Abduct hip joint, flex hip joint, medially rotate hip joint

Piriformis, gemellus superior and inferior, obterator internus, and quadratus femoris

laterally rotate hip joint

Sartorius

Flex knee joint, flex and laterally rotate hip jt.

Rectus femoris

Extend knee joint, flex hip joint

Vastus lateralis

Extend knee jt.

Vastus medialis

Extend knee jt.

Vastus intermedius

Extend knee joint

Gracilis

Adduct hip joint, flex knee joint

Pectineus

Adduct and flex hip joint

Adductor longus

Adduct and flex hip joint

Adductor brevis

Adduct and flex hip joint

Adductor magnus

Adduct and extend hip joint

Biceps femoris long head

Flex knee joint, extend hip joint

Biceps femoris short head

Flex knee joint

Semitendinosus

Flex knee joint, extend hip joint

Semimembranosus

Flex knee joint, extend hip joint

Tibialis anterior

Dorsiflex ankle joint and invert foot

Extensor digitorum longus

Extend digits 2-5, dorsiflex ankle joint

Extensor hallucis longus

Extend hallux, dorsiflex ankle joint

Fibularis tertius

Dorsiflex ankle joint and evert foot

Fibularis longus

plantarflex ankle joint and evert foot

Fibularis brevis

plantarflex ankle joint and evert foot

Gastrocnemius

Plantar flex ankle joint, weakly flex knee joint

Soleus

Plantar flex ankle joint

Plantaris

Plantar flex anke joint, weakly flex knee joint

Popliteus

Flex knee joint, medially rotate tibia

Flexor hallucis longus

Flex hallux, plantarflex the ankle joint

Flexor digitorum longus

Flex digits 2-5, plantarflex the ankle joint

Tibialis posterior

Plantar flex the ankle joint, invert the foot