Lab Muscles Part 4: Hip and Lower Limb

Muscles crossing the Hip and Knee Joint

• Iliosoas

  • Iliacus

  • Psoas major

• Sartorius

• Adductor magnus, longus, brevis

• Pectineus

• Gracilis

• Quadriceps femoris

• Rectus femoris

• Vastus lateralis

• Vastus medialis

• Vastus intermedialis

• Tensor fascia lata

What is the action, origin, and insertion of Iliopsoas?

O- Illiac fossa (ilicus), transverse processes T12-L5 (psoas)

I- Lesser trochanter of femur

Action- flexes hip, or trunk on hip joint. Flexes column (psoas)

What is the action, origin, and insertion of Sartorius?

O- anterior superior iliac spine

I- proximal tibia

Action- flexes/ laterally rotates thigh, flexes knee

What is the action, origin, and insertion of Adductor magnus, longus, AND brevis?

O-Magnus: Ischial/pubic ramus/ ischial tuberosity. Longus: pubis near symphysis; Brevis; inf. pubic ramus

I- linea aspera of femur. Magnus Also adductor tubercle

action- adduct/ medially rotate/ flex thigh

What is the action, origin, and insertion of Pectineus?

O- pectineal line, sup. pubic ramus

I- inferior to lesser trochanter pectineal line

action- adduct/ medially rotate/ flex thigh

What is the action, origin, and insertion of Gracilis?

O- inferior ramus and body of Pubis

I- inferior to medial condyle of tibia

action- adducts thigh; flex/ medially rotate leg

What is the action, origin, and insertion of Quadriceps femoris?

O- ischial tuberosity

I- intertrochanteric crest

action- lateral rotation thigh

What is the action, origin, and insertion of Rectus Femoris?

O- anterior inferior illiac spine/ actebabulum

I-tibial tuberosity

action- extends knee/flexes thigh

What is the action, origin, and insertion of Vastus lateralis?

O- Greater trochanter, linea aspera femur

I- tibial tuberosity

action- extends knee

What is the action, origin, and insertion of Vastus medialis?

O- linea aspera of femur

I- tibial tuberosity

action- extends knee

What is the action, origin, and insertion of Vastus intermedius?

O- anterior/ lateral surface of femur

I- tibial tuberosity

action- extends knee

What is the action, origin, and insertion of Tensor fasica lata?

O- iliac crest/anterior superior illiac spine

I- IT band of fascia lata

action- flexes/abducts/ medially rotates thigh

What are the posterior muscles that cross the hip and knee?

• Gluteus maximus

• Gluteus medius

• Gluteus minimus

• Biceps femoris

• Semitendinous

• Semimembranosus

What is the action, origin, and insertion of Gluteus maximus?

O- ilium, sacrum, coccyx

I- gluteal tuberosity of femur, IT band

action- Extends hip/ abducts and laterally rotates thigh

What is the action, origin, and insertion of Gluteus medius?

O- Ilium

I- greater trochanter of femur

action- abducts and medially rotates thigh

What is the action, origin, and insertion of Gluteus minimus?

O- external face of (deepest) ilium

I- greater trochanter of femur

action- abducts and medially rotates thigh

What is the action, origin, and insertion of Biceps femoris?

O- ischial tuberosity, linea aspera of femur

I- proximal head of fibula, lateral condyle of tibia

action- extends thigh/ laterally rotates leg/ flexes knee

What is the action, origin, and insertion of Semitendinous?

O- ischial tuberosity

I- upper shaft of (medial) tibia

action- extends thigh/ medially rotates leg// flexes knee

What is the action, origin, and insertion of Semimembranosus?

O- ischial tuberosity

I- medial condyle of tibia

action- extends thigh/ medially rotates leg/ flexes knee

Muscles of the anterior compartment of the leg

• Tibialis anterior

• Extensor digitorum longus

• Extensor hallucis longus

What is the action, origin, and insertion of Tibialis anterior?

O- lateral condyle and upper shaft of tibia

I- Inferior face of first cuniform (tarsal) and metatarsal 1

action- Dorsiflexion (Prime Mover), Foot inversion

What is the action, origin, and insertion of Extensor digitorum longus?

O- lateral condyle of tibia, proximal fibula

I- phalanges of toes II- V

action- toe extension (PM)

What is the action, origin, and insertion of Extensor hallucis longus?

O- anterior shaft of fibula (deep)

I- distal phalanx of great toe

action- extends great toe, dorsiflexes foot

Muscles of the lateral compartment of the leg

• Fibularis (peroneus) longus

• Fibularis (peroneus) brevis

What is the action, origin, and insertion of Fibularis (peroneus) longus?

O- head and upper fibula

I- tendon behind lateral malleuos, then under foot to metatarsal #1

action- Plantar flexes and everts foot

What is the action, origin, and insertion of Fibularis (peroneus) brevis?

O- distal fibula

I- tendon behind lateral malleuos, proximal metatarsals V

action- Plantar flexes and everts foot

Triceps surae

What are the muscles of the posterior compartment?

• gastroneumius

• Soleus

What is the action, origin, and insertion of Gastroneumics?

O- medial and lateral condyles of femur

I- calcaneus via calcaneal tendon

action- Plantar flexion (PM), with SOLUS/ knee flexion foirms triceps surae with soleus

What is the action, origin, and insertion of Soleus?

O- Proximal shaft of both tibia and fibula

I- calcaneus via calcaneal tendon

action- Plantar flexion (PM) with gastronemius

What are the deep muscles?

• popliteus

• flexor digitorum longus

• flexor hallucis longus

• tibialis posterior

What is the action, origin, and insertion of Popliteus?

O- lateral condyle of femur

I- proximal tibia (from behind)

action- flex and medically rotates leg (UNLOCKS knee for flexion)

What is the action, origin, and insertion of Flexor digitorum longus?

O- posterior tibia

I- distal phalanges toes II-V

action- flexes toes

What is the action, origin, and insertion of Flexor hallucis longus?

O- fibula

I- tendon under foot to distal phalynx of great toe

action-plantar flexes great toe - used in walk !!

What is the action, origin, and insertion of Tibalis posterior ?

O- proximal tibia, posterior face of fibula

I- tendon behind medial malleuos to metatarsals II-V

action- Foot inversion (PM), plantar flexion