Muscles that move hip/thigh, knee/leg

Iliopsoas group

Iliacus & psoas major

Iliacus

Iliacus

Psoas major

Psoas major

Gluteus maximus

Origin: Posterior aspect of the dorsal ilium

Posterior superior iliac crest, posterior inferior aspect of sacrum & coccyx

Insertion: Iliotibial band; also into the gluteal tuberosity on the posterior femoral surface

Action: Major extensor of hip joint

Gluteus maximus

Extends thigh at the hip & assists in its lateral rotation; steadies thigh & assist in raising trunk from flexed position

Gluteus medius

Abducts & medially rotates thigh at hi[; steadies pelvis on limb when opposite is raised

Gluteus medius

Rectus femoris

Origin: Anterior inferior iliac spine & ilium

Insertion Point: Quadriceps tendons to the base of patella (knee cap) & onto the tibial tuberosity via the patellar ligament

Rectus femoris

Extends knee &flexes thigh at hip

Vastus intermedius

Origin: Anterior & lateral surfaces of shaft of femur (thigh bone)

Insertion: Quadriceps tendon to the base of patellar (knee cap) onto tibial tuberosity via the patellar ligament

- beneath rectus femoris

Vastus intermedius

Vastus lateralis

Origin: Greater trochanter

Insertion: Quadriceps tendon

Vastus lateralis

Vastus medialis

Origin: Intertrochanteric line

Insertion: Quadriceps tendon

Vastus medialis

Biceps femoris

Origin: Ischium

Insertion: Head of fibula & lateral condyle of tibia

Action: Flexes leg, extends thigh

Biceps femoris

Semimembranosus

Origin: Ischium

Insertion: Medial condyle of tibia

Action: Flexes leg, extends thigh

Semimembranosus

Semitendinosus

Origin: Ischium

Insertion: medial surface of tibia

Action: Flexes leg, extends thigh

Semitendinosus

Sartorius

Flexes, abducts, and laterally rotates thigh at the hip; flexes knee

Sartorius