origin:
ala of sacrum
iliac fossa
iliac crest
insertion:
lesser trochanter of femur via iliopsoas tendon
action: prime mover for flexing thigh
origin: anterior superior iliac spine
insertion: winds around medial aspect of knee and inserts into medial aspect of proximal tibia
action: flexes, abducts, and laterally rotates thigh
origin:
dorsal ilium
coccyx
sacrum
insertion:
gluteal tuberosity of femur
iliotibial tract
action: major extensor of thigh
origin: between anterior and posterior gluteal lines on lateral surface of ilium
insertion: by short tendon into lateral aspect of greater trochanter of femur
action: abducts and medially rotates thigh
origin:
anterior aspect of iliac crest
anterior superior iliac spine
insertion: iliotibial tract
action: steadies the leg and trunk on thigh by tightening iliotibial tract
origin: anterior inferior iliac spine
superior margin of acetabulum
insertion: patella and tibial tuberosity via patellar ligament
action: extends leg and flexes thigh at hip
origin:
greater trochanter
intertrochanteric line
linea aspera
insertion:
patella and tibial tuberosity via patellar ligament
action: extends leg and stabilizes knee
origin:
linea aspera
intertrochanteric and medial supracondylar lines
insertion:
patella and tibial tuberosity via patellar ligament
action: extends leg
origin: anterior and lateral surfaces of proximal femur shaft
insertion: patella and tibial tuberosity via patellar ligament
action: extends leg
origin:
distal femur (short head)
ischial tuberosity
linea aspera
lateral supracondylar line
insertion:
common tendon into head of fibula
common tendon into lateral condyle of tibia
action: extends thigh and flexes leg
origin: ischial tuberosity in common with long head of biceps femoris
insertion: medial aspect of upper tibial shaft
action: extends thigh and flexes leg
origin: ischial tuberosity
insertion: medial condyle of tibia
lateral condyle of femur
action: extends thigh and flexes leg
origin: pubis near pubic symphysis
insertion: linea aspera
action: adducts, flexes, and medially rotates thigh
origin: ischial and pubic rami
ischial tuberosity
insertion:
linea aspera
adductor tubercle of femur
action: anterior part adducts and medially rotates and flexes thigh
posterior part is a synergist of hamstrings in thigh extension
origin: inferior ramus and body of pubis
adjacent ischial ramus
insertion: medial surface of tibia just inferior to its medial condyle
action: adducts thigh, flexes and medially rotates leg
origin:
lateral condyle and upper 2/3 of tibial shaft
interosseous membrane
insertion:
by tendon into interior surface of medial cuneiform and first metatarsal bone
action: prime mover of dorsiflexion
origin:
lateral condyle of tibia
proximal 3/4 of fibula
interosseus membrane
insertion: middle and distal phalanges of second to fifth toes via extensor expansion
action: prime mover of toe extension
origin: by two heads from medial and lateral condyles of femur
insertion: posterior calcaneus via calcaneal tendon
action: plantar flexes foot
origin:
extensive origin from superior tibia
fibula
interosseus membrane
insertion:
posterior calcaneus via calcaneal tendon
action: plantar flexes foot
origin: extensive origin on the posterior tibia
insertion: tendon runs behind the medial malleolus and inserts into distal phalanges of second to fifth toes
action: plantar flexes and inverts foot, flexes toes
origin: head and upper portion of lateral fibula
insertion: by long tendon that curves under foot to first metatarsal and medial cuneiform
action: plantar flexes and everts foot
origin: distal fibula shaft
insertion: by tendon running behind lateral malleolus to insert on proximal end of fifth metatarsal
action: plantar flexes and everts foot