lower extremity muscle o's and i's

adductor brevis

o: inferior rami of pubis

I: upper half of posterior femur

Action: PM

Adductor magnus

O: inferior rami of pubis

I: linea aspera of posterior femur, adductor tubercle

Action: PM and Asst

Adductor longus

O: inferior rami of pubis

I: middle third of posterior femur

Action: PM and Asst

Biceps femoris

O: ischial tuberosity

I: lateral condyle of tibia, head of fibula

Action: PM

Gastrocnemius

O: medial, lateral condyles of femur

I: calcaneus

Action: Asst

Gluteus maximus

O: posterior ilium, sacrum, coccyx

I: gluteal tuberosity; iliotibial (IT) band

Action: PM

Gluteus medius

O: Anterior, lateral ilium

I: lateral surface of greater trochanter

Action: PM

Gluteus minimus

O: outer, lower ilium

I: front of greater trochanter

Action: PM

Gracilis

O: inferior rami of pubis

I: Medial tibis (pes anserinus)

Action: PM and Asst

Peroneus longus

O: head and upper lateral surface of fibula

I: base of 1st metatarsal and medial cuneiform

Action: PM and Asst

Piriformis

O: anterior lateral sacrum

I: superior greater trochanter

Action: Asst

Pectineus

O: pectineal line of pubis

I: below lesser trochanter

Action: PM

Popliteus

O: Lateral condyle of femur

I: proximal tibia

Action: PM and Asst

Rectus femoris

O: anterior inferior iliac spine

I: patella, tibial tuberosity

Action: PM and Asst

Sartorius

O: anterior superior iliac spine

I: medial tibia (pes anserinus)

Action: PM and Asst

Semimembranosus

O: ischial tuberosity

I: medial condyle of tibia

Action: PM and Asst

Soleus

O: upper posterior tibia, fibula, interosseus membrane

I: calcaneus

Action: PM

Tensor fascia latae

O: anterior superior iliac spine

I: iliotibial tract

Action: PM and Asst

Tibialis anterior

O: upper lateral tibia, interosseous membrane

I: medial plantar surface of first cuneiform

Action: PM

Tibialis posterior

O: upper posterior tibia, fibula, interosseous membrane

I: inferior navicular

Action: PM and Asst

Vastus intermedius

O: anterior lateral femur

I: patella, tibial tuberosity

Action: PM

Vastus lateralis

O: intertrochanteric line; linea aspera

I: patella, tibial tuberosity

Action: PM

Vastus medialis

O: linea aspera; trochanteric line

I: patella; tibial tuberosity

Action: PM

What muscles perform knee flexion?

Biceps femoris, semitendinosus, semimembranosus, sartorius, Gracilis, gastrocnemius, and popliteus

What muscles perform knee extension?

Rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius

What muscles perform knee internal rotation?

Semitendinosus, semimembranosus, sartorius, Gracilis, and popliteus

What muscle performs knee external rotation?

Biceps femoris

What muscles perform hip flexion?

Rectus femoris, sartorius, tensor fascia latae, pectineus, adductor longus, and adductor brevis

What muscles perform hip extension?

Gluteus maximus, biceps femoris, semitendinosus, semimembranosus, and adductor magnus

What muscle performs hip abduction and hip internal rotation?

Gluteus medius, gluteus minimus, and tensor fasica latae

What muscles perform hip adduction?

Adductor brevis, adductor longus, adductor magnus, Gracilis, and pectineus

What muscles perform hip external rotation?

Gluteus maximus, piriformis, and sartorius

What muscle performs ankle dorsiflexion?

Tibialis anterior

What muscles perform ankle plantar flexion?

Gastrocnemius, soleus, tibialis posterior, and peroneus longus

What muscles perform foot inversion?

Tibialis anterior and tibialis posterior

What muscle perform foot eversion?

Peroneus longus