Give the origin, insertion, and action of the gluteus maximus
O: Iliac crest, lateral surface of the ilium; sacrum, coccyx
I: Iliotibial tract and gluteal tuberosity of femur
A: Extension and lateral rotation at hip
Give the origin, insertion, and action of the gluteus medius and minimus
O: Anterior iliac crest of ilium/lateral surface of ilium
I: Greater trochanter of femur
A: Abduction and medial rotation at hip
Give the origin, insertion, and action of the tensor fascia latae
O: Iliac crest and lateral surface of anterior superior iliac spine
I: Iliotibial tract
A: Flexion and medial rotation at hip; laterally supports the knee (fascia lata)
Give the origin, insertion, and action of the Iliacus (iliopsoas group)
O: Iliac fossa of ilium
I: Femur distal to lesser trochanter
A: Flexion at hip
Give the origin, insertion, and action of the psoas major (iliopsoas group)
O: Anterior surfaces and transverse processes of vertebrae (T12-L5)
I: Lesser trochanter in company with iliacus
A: Flexion at hip or lumbar intervertebral joints
Give the origin, insertion, and action of the sartorius
O: Anterior superior iliac spine
I: Medial surface of tibia near tibial tuberosity
A: Flexion at knee; flexion and lateral rotation at hip
Give the origin, insertion, and action of the adductors
O: Inferior ramus of pubis
I: Linea aspera of femur
A: Adduction at hip
Give the origin, insertion, and action of the rectus femoris
O: Anterior inferior iliac spine and superior acetabular rim of ilium
I: Tibial tuberosity via patellar ligament
A: Extension at knee; flexion at hip
Give the origin, insertion, and action of the vastus medialis
O: Entire length of linea aspera of femur
I: Tibial tuberosity via patellar ligament
A: Extension at knee
Give the origin, insertion, and action of the vastus intermedius
O: Anterolateral surface of femur and line aspera
I: Tibial tuberosity via patellar ligaments
A: Extension at knee
Give the origin, insertion, and action of the vastus lateralis
O: Anterior and inferior to greater trochanter of femur and along linea aspera (proximal half)
I: Tibial tuberosity via patellar ligament
A: Extension at knee
Give the origin, insertion, and action of the gracilis
O: Inferior ramus of pubis
I: Medial surface of tibia inferior to medial condyle
A: Flexion at knee; adduction and medial rotation at hip
Give the origin, insertion, and action of the biceps femoris
O: Ischial tuberosity and linea aspera of femur
I: Head of fibula, lateral condyle of tibia
A: Flexion at knee; extension and lateral rotation at hip
Give the origin, insertion, and action of the semimembranosus
O: Ischial tuberosity
I: Posterior surface of medial condyle of tibia
A: Flexion at knee; extension and medial rotation at hip
Give the origin, insertion, and action of the semitendinosis
O: Ischial tuberosity
I: Proximal, medial surface of tibia near insertion of gracilis
A: Flexion at knee; extension and medial rotation at hip
Give the origin, insertion, and action of the gastrocnemius
O: Femoral condyles
I: Calcaneous via calcaneal tendon
A: Extension (plantar flexion) at ankle; inversion of foot; flexion at knee
Give the origin, insertion, and action of the soleus
O: Head and proximal shaft of fibula and adjacent posteromedial shaft of tibia
I: Calcaneous via calcaneal tendon (with gastrocnemius)
A: Extension (plantar flexion) at ankle
Give the origin, insertion, and action of the fibularis brevis
O: Midlateral margin of fibula
I: Base of fifth metatarsal bone
A: Eversion of foot and extension (plantar flexion) at ankle; supports longitudinal arch
Give the origin, insertion, and action of the fibularis longus
O: Lateral condyle of tibia, head and proximal shaft of fibula
I: Base of fifth metatarsal bone and medial uniform bone
A: Eversion of foot and extension (plantar flexion) at ankle; supports longitudinal arch
Give the origin, insertion, and action of the popliteus
O: Lateral condyle of femur
I: Posterior surface of proximal tibial shaft
A: Medial rotation of tibia (or lateral rotation of femur); flexion at knee
Give the origin, insertion, and action of the tibialis anterior
O: Lateral condyle and proximal shaft of tibia
I: Base of first metatarsal bone and medial uniform bone
A: Flexion at ankle; inversion of foot
Give the origin, insertion, and action of the tibialis posterior
O: Interosseous membrane and adjacent shafts of tibia and fibula
I: Tarsal and metatarsal bones
A: Adduction and inversion of foot; extension (plantar flexion) at ankle
Give the origin, insertion, and action of the extensor digitorus
O: Anterior surface of fibula
I: Superior surface, distal phalanx of great toe
A: Extension at joints of great toe