| NAME | ORIGIN | INSERTION | INNERVATION | ACTION | REMARKS |
| psoas major | vertebrae T12-L5 | lesser trochanter | nn. L2-L3 | flexes & laterally rotates thigh | - |
| iliacus | iliac fossa | lesser trochanter | L2-L3 / femoral n. |
flexes & laterally rotates thigh | - |
| sartorius | anterior superior iliac spine |
tibial tuberosity | L2-L3 / femoral n. |
flexes & laterally rotates thigh | also flexes leg |
| gracilis | pubis | tibia (superior/medial) | L2-L4 / obturator n. |
adducts & flexes thigh | also flexes leg |
| adductor longus | pubis | linea aspera of femur | L2-L4 / obturator n. |
adducts & flexes thigh | - |
| adductor magnus | pubis & ischial tuberosity | linea aspera & adductor tubercle of femur | L2-L4 / obturator & sciatic nn. |
adducts thigh | also flexes, extends, & rotates thigh |
| tensor fasciae latae | iliac crest & anterior superior iliac spine | lateral condyle of tibia via iliotibial band | L4-S1 / superior gluteal n. |
abducts & medially rotates thigh | - |
| gluteus maximus | iliac crest, sacrum, coccyx | iliotibial tract; gluteal tuberosity & linea aspera | L5-S2 / inferior gluteal n. |
extends & laterally rotates thigh | - |
| gluteus medius | ilium | greater trochanter | L4-S1 / superior gluteal n. |
abducts & medially rotates thigh | - |
| piriformis | sacrum | greater trochanter | S1-S2 (ventral rami) |
laterally rotates thigh | also abducts thigh |
| superior gemellus / obturator internus / inferior gemellus | ischial spine & tuberosity, etc. | greater trochanter | nn. L5-S2 | rotate thigh laterally | - |
| quadratus femoris | ischial tuberosity | intertrochanteric crest | nn. L4-S1 | adducts & laterally rotates thigh | - |
| NAME | ORIGIN | INSERTION | INNERVATION | ACTION | REMARKS |
| rectus femoris | anterior inferior iliac spine |
tibial tuberosity via quadriceps tendon / patellar ligament |
L2-L4 / femoral n. | extends leg & flexes thigh |
part of quadriceps femoris (prime mover of leg extension) |
| vastus lateralis | greater trochanter & linea aspera |
tibial tuberosity via quadriceps tendon / patellar ligament |
L2-L4 / femoral n. | extends leg | part of quadriceps femoris (prime mover of leg extension) |
| vastus medialis | intertrochanteric line & linea aspera |
tibial tuberosity via quadriceps tendon / patellar ligament |
L2-L4 / femoral n. | extends leg | part of quadriceps femoris (prime mover of leg extension) |
| vastus intermedius | femur (anterolateral shaft) |
tibial tuberosity via quadriceps tendon / patellar ligament |
L2-L4 / femoral n. | extends leg | part of quadriceps femoris (prime mover of leg extension) |
| biceps femoris | ischial tuberosity & linea aspera |
head of fibula | L4-S1 / sciatic n. | flexes leg & extends thigh (long head only) | lateral component of "hamstrings" |
| semitendinosus | ischial tuberosity | proximal medial tibia | L4-S1 / sciatic n. | flexes leg & extends thigh | one of two medial "hamstrings" muscles |
| semimembranosus | ischial tuberosity | medial condyle of tibia | L4-S1 / sciatic n. | flexes leg & extends thigh | one of two medial "hamstrings" muscles |
| NAME | ORIGIN | INSERTION | INNERVATION | ACTION | REMARKS |
| tibialis anterior | lateral condyle & shaft of tibia | metatarsal I & medial cuneiform | L4-S1 / deep fibular n. |
dorsiflexes & inverts foot | - |
| extensor hallucis longus | anterior fibula | distal phalanx I | L4-S1 / deep fibular n. |
extends great toe & dorsiflexes foot |
hallux = great toe |
| extensor digitorum longus | lateral condyle of tibia, fibula | distal phalanges II-V | L4-S1 / deep fibular n. |
extends toes & dorsiflexes foot |
- |
| fibularis longus | head & superior shaft of fibula, lateral condyle of tibia | metatarsal I & medial cuneiform | L5-S2 / superficial fibular n. |
everts & plantarflexes foot | - |
| gastrocnemius | medial & lateral condyles of femur | calcaneus via calcaneal tendon | L4-S1 / tibial n. | plantarflexes foot, flexes leg |
part of "triceps surae" |
| soleus | head & shaft of fibula, tibia | calcaneus via calcaneal tendon | L4-S1 / tibial n. | plantarflexes foot | part of "triceps surae" |
| tibialis posterior | fibula & tibia | navicular, cuboid, all cuneiforms, & metatarsals II-IV | L5-S1 / tibial n. | plantarflexes & inverts foot | - |
| flexor digitorum longus | posteromedial tibia | distal phalanges II-V | L5-S1 / tibial n. | flexes interphalangeal joints, plantarflexes foot | - |
| flexor hallucis longus | posterior fibula | distal phalanx I | L5-S1 / tibial n. | flexes interphalangeal joints, plantarflexes foot | hallux = great toe |