Origin and Insertation ( Lower Extremities )

26 terms by kgrimes

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Iliopsoas muscle

O-ilium, base of sacrum and sides of last thoracic and lumbar verterbre
I- lesser trochanter of femur and shaft just below
A- Flexion of hip, outward rotation of femur

Sartorius muscle

O-Notch between anterior - superior and anterior- inferior spines of ilium
I-Anterior medial condyle of tibia
A- Flexion of hip, flexion of knee, outward rotation of of thigh as the knee and hip flexes

Rectus Femoris muscle

O- anterior- inferior iliac spine of ilium
I- Top of patella to tibial tuberosity
A- Flexion of hip, extension of knee

Tensor fascia latae muscle

O- anterior iliac crest and ilium
I- Iliotibial band
A- Flexion of hip, horizontal agduction of hip, hip rotates inward as it flexes.

Gluteus medius muscle

O- posterior and middle surface of ilium
I- greater trochanter of femur
A- abduction of hip, outward rotation as hip abducts

Gluteus minimus muscle

O- ilium, below origin of gluteus medius
I- anterior surface of greater trochanter
A- Abduction of femur on the pelvis and inward rotation as femur abducts

Gluteus maximus muscle

O- posterior of the crest of ilium, posterior of sacrum near ilium and fascia of lumbar area
I- Gluteal line of femur and iliotibial band
A- Extension of hip, ourtward rotation of hip and lower fibers assist in adduction

Piriformis, Gemellus superior, Gemellus inferior, obturator externus, obturator internus and quadratus femoris

O- Sacrum, Posterior ischium and obturator foramen
I- Greater Trochanter
A- Outward rotation

Biceps femoris muscle

O- tuberosity of ischuim, lower half of linea aspera and outer condyloid ridge
I-lateral condyle of tivia and head of fibula
A- extension of hip, flexion of knee, outward rotation of hip and knee

Semitendinosus muscle

O- tuberosity of ischium
I- upper anterior medial condyle of tibia
A- extension of hip, flexion of knee and inward rotation of hip and knee

Semimembranosis muscle

O- tuberosity of ischium
I- posterior medial condyle of tibia
A- Extension of hip, flexion of knee and inward rotation of hip and knee

Pectinius muscle

O- pubis
I- lesser trochanter to linea aspera
A- flexion of hip, abduction of hip on pelvis

Adductor brevis muscle

O- front of pubis
I- lesser trochanter and linea aspera
A- adduction of hip, rotation outward as it adducts hip

Adductor longus muscle

O- front of pubis
I- linea aspera
A- adduction of hip, assists in flexion of hip

Vastus Lateralis

O- below greater trochanter and linea aspera
I-patella to tibial tuberosity
A- knee extension
P- lateral side of thigh

Vastus Intermedias

O-anterior surface of femur
I- pallea to tibial tuberosity
A-knee extension

Vastus medialis

O-linea aspera and internal condyloid ridge
I-upper border of patella to tibial tuberosity
A- knee extension

Popliteus muscle

O- posterior of outer condyle of femur
I- uppper posterior of medial surface of tibia
A- flexion of knee

Gastrocnemius

O-posterior surfaces of two condyles of the femur
I- Posterior surface of the calcaneus
A- plantar flexion of ankle and knee flexion
P- upper posterior aspect of lower leg

Soleus Muscle

O-upper posterior surfaces fo tibia and fibula
I- Posterior surface of calcaneus
A-Plantar flexion of the ankle

Tibialis posterior muscle

O-posterior surface of interosseous membrane
I-lower inner suface of navicular and cuneiform bones, base of 2,3,4 and 5th bones
A-Plantar flexion of ankle and inversion of foot

Flexor digitorum longus muscle

O- lower posterior of tibia
I-base of distal phalanx of four outer toes
A- Plantar flexion of ankle, flexion of toes and inversion of foot

Flexor hallucis longus muscle

O- lower posterior of fibula
I- base of distal phalanx of big toe under surface
A- plantar flexion of ankle and big toe and inversion
P- inside calcaneal tendon near heel

Peroneus longus muscle

O-head of outer surface of fibula
I- undersufaces of medial cuneiform and first metarsal
A- Plantar flexion fo the ankle and eversion
P- 3rd muscle on the lateral side of tibia

Peroneus brevis and tertius muscle

O- outer surface of fibula
I- tuberosity fo fifth metarsal bone
A- Brevis does plantar flexion and eversion. Tertius does eversion and dosiflexion

Extensor hallucus longus

O- inner surface of front of fibula
I- Top of big toe
A- dorsiflexion of ankle, toe extension and foot inversion
P- Near great toe on dorsal surface.

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