Muscles that move the pelvic girdle and lower limb

muscles of anterior compartment

iliopsoas = iliacus + psoas major

rectus femoris

sartorius

iliopsoas (muscle of anterior compartment)

includes iliacus (sits in iliac fossa) and psoas major (transverse process of lumbar spine)

2 origins, common insertions on medial anterior thigh

hip flexion, trunk flexion

rectus femoris

hip flexion, knee extension (only quad muscle that also performs hip flexion!)

sartorius

hip flexion

knee flexion

hip external rotation

lower leg internal rotation

(not a quad muscle)

muscles of the medial compartment - Paul Bunyan Loves My Grandma - ADDuction (groin muscles)

obturator externus

pectineus

adductor brevis

adductor longus

adductor magnus

gracilis

obturator externus

lateral rotation

hip adduction (flexion)

stabilizes hip joint

pectineus

adduction

flexion

external rotation

adductor brevis

adduction of thigh

hip flexion

stabilization

adductor longus

adduction

rotation (lateral/external)

flexion

stabilization

adductor magnus (has adductor hiatus)

adduction

hip extendor

rotation

gracilis

2nd muscle that attaches at pes anserine

hip adduction

knee flexion

muscle of the lateral comparment

tensor fasciae latae (tenses fascia laterally)

iliac crest to IT band

muscles of posterior compartment (hamstrings)

biceps femoris

semimembranosus

semitendinosus

biceps femoris

lateral rotation of lower leg

hip extension

knee flexion

semimembranosus

internal rotation of lower leg (deep)

hip extension

knee flexion

semitendinosus

internal rotation of lower leg

hip extension

knee flexion

on TOP

muscles of the gluteal group

gluteus maximus

gluteus medius

gluteus minimus

gluteus maximus

hip extension, lateral rotation

gluteus medius

abduction of thigh, medial rotation of thigh, tensor facilitator -abduction

gluteus minimus

abduction of thigh, medial rotation of thigh, tensor facilitator -abduction

muscles of the deep gluteal region

external rotators of hip; aid in abduction when hip is flexed: (S-I)

piriformis

superior gemellus

obturator internus

inferior gemellus

quadratus femoris (also weaker adduction)

thigh muscles that move the knee joint - extension

rectus femoris (other function is hip flexion)

vastus lateralis

vastus medialis

vastus intermedius

*all 4 converge on a single quadriceps tendon, which extends to the patella and then continues interiorly as the patellar ligament and inserts on the tibial tuberosity

thigh muscles that move the knee joint - flexion

hamstrings (biceps femoris, semimembranosus, semitendinosus) - hip ex, knee flex

sartorius

gracilis