large leg + small leg

A

Iliacus

B

Psoas Major

A

Tensor Fascia Latae

Action- flexes/ abducts/ medially rotates thigh/ steadies trunk

Origin- anterior aspect of Iliac Crest/ anterior

superior Iliac spine

Insertion- Iliotibial Tract

B

Pectineus

Action- adducts/ Flexes/ medially rotates thigh

Origin- pectineal line of Pubis/ superior Pubic ramus

Insertion- Lesser Trochanter to Linea Aspera of the Femur

C

Sartorius

Action- flexes/ abducts/ laterally Rotates thigh/ flexes knee/ leg/ effects cross-legged position

Origin- Anterior superior Iliac spine

Insertion- Aponeurosis into medial aspect of proximal Tibia

D

Adductor Longus

Action- adduct/ medially rotate and flex thigh

Origin- pubis near pubic symphysis

Insertion- Linea Aspera

A

Rectus Femorus

Action- extends knee/ leg/ flexes thigh hip

Origin- Anterior inferior Iliac spine/ superior margin of Acetabulum

Insertion- Tibial Tuberosity/ Patella

B

Vastus Medialis

Action- extends knee/ leg/ stabilizes Patella

Origin- Linea aspera/ intertrochantric line

Insertion- Tibial Tuberosity/ Patella

C

Vastus Lateralis

Action- extends knee/ stabilizes knee

Origin- Greater trochanter/ intertrochantric line/ linea aspera

Insertion- Tibial Tuberosity/ Patella

D

Tendon of quadriceps/rectus femoris

E

Vastus Intermedius

Action- extends knee/ leg

Origin- anterior and lateral surface of Femur

Insertion- Tibial Tuberosity/ Patella

F

Patellar ligament

A

Adductor Longus

Action- adduct/ medially rotate and flex thigh

Origin- pubis near pubic symphysis

Insertion- Linea Aspera

B

Adductor Magnus

Action- adduct/ medially rotate and flex thigh/ synergist in thigh extension

Origin- Ischial ramus/ Pubic ramus/ Ischial tuberosity

Insertion- Linea Aspera of Femur/ adductor Tubercle of Femur

C

Gracilis

Action- adducts thigh/ flexes and medially rotates leg (during walking)

Origin- inferior Pubic ramus/ Body of Pubis

Insertion- medial Surface of Tibia, inferior to Medial Condyle

D

Sartorius

Action- flexes/ abducts/ laterally Rotates thigh/ flexes knee/ leg/ effects cross-legged position

Origin- Anterior superior Iliac spine

Insertion- Aponeurosis into medial aspect of proximal Tibia

E

Vastus Medialis

Action- extends knee/ leg/ stabilizes Patella

Origin- Linea aspera/ intertrochantric line

Insertion- Tibial Tuberosity/ Patella

A

Gluteus Medius

Action- medially rotates/ abducts thigh/ steadies pelvis during walking

Origin- upper lateral surface of the Ilium

Insertion- Greater trochanter of the Femur

B

Gluteus Maximus

Action- powerful extensor (climbing stairs not walking) / antagonist of Iliopsoas/ laterally rotates/ abducts thigh

Origin- dorsal Ilium/ Sacrum/ Coccyx

Insertion- Gluteal Tuberosity of Femur/ Iliotibial Tract

C

Biceps Femoris Long head

Action- extends thigh/ laterally rotates Leg/ flexes knee/ leg

Origin- Ischial tuberosity

Insertion- head of Fibula

D

Tensor Fascia Latae

Action- flexes/ abducts/ medially rotates thigh/ steadies trunk

Origin- anterior aspect of Iliac Crest/ anterior superior Iliac spine

Insertion- Iliotibial Tract

E

Vastus Lateralis

Action- extends knee/ stabilizes knee

Origin- Greater trochanter/ intertrochantric line/ linea aspera

Insertion- Tibial Tuberosity/ Patella

A

Gluteus Maximus

Action- powerful extensor (climbing stairs not walking) / antagonist of Iliopsoas/ laterally rotates/ abducts thigh

Origin- dorsal Ilium/ Sacrum/ Coccyx

Insertion- Gluteal Tuberosity of Femur/ Iliotibial Tract

B

Semitendinous

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

Origin- Ischial tuberosity

Insertion- medial aspect of upper Tibial Shaft

C

Semimembranous

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

Origin- Ischial tuberosity

Insertion- medial Condyle of Tibia/ Lateral Condyle of Femur

D

Biceps Femoris Long head

Action- extends thigh/ laterally rotates Leg/ Flexes knee/leg

Origin- Ischial tuberosity

Insertion- head of Fibula

A

Semitendinous

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

Origin- Ischial tuberosity

Insertion- medial aspect of upper Tibial Shaft

B

Semimembranous (underneath)

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

Origin- Ischial tuberosity

Insertion- medial Condyle of Tibia/ Lateral Condyle of Femur

C

Biceps Femoris Short Head (under long head)

Action- extends thigh/ laterally rotates Leg/ flexes knee/ leg

Origin- Linea aspera/ distal Femur

Insertion- Lateral Condyle of Tibia

A

Extensor Digitorum Longus

Action- prime mover of toe extension/ dorsiflexes foot

Origin- Lateral condyle of Tibia/ proximal 3/4 of Fibula/ interosseous membrane

Insertion- Middle and Distal phalanges of toes 2-5

B

Fibularis (Peroneus) Longus

Action- plantar flexes/ Everts foot

Origin- Head and upper portion of Fibula

Insertion- 1st Metatarsal/ Medial Cuneiform

C

Tibialis Anterior

Action- prime mover of dorsiflexion/ inverts foot/ supports longitudinal arch of the foot

Origin- Lateral condyle/ upper 2/3 of Tibia/ interosseous membrane

Insertion- Inferior surface of 1st cuneiform/ 1st metatarsal

D

Extensor hallucis brevis

A

Tibialis Anterior

Action- prime mover of dorsiflexion/ inverts foot/ supports longitudinal arch of the foot

Origin- Lateral condyle/ upper 2/3 of Tibia/ interosseous membrane

Insertion- Inferior surface of 1st cuneiform/ 1st metatarsal

B

Extensor Hallucis Longus (under Extensor digitorum longus)

Action- extends great toe/ dorsiflexes foot

Origin- anteromedial shaft of the Fibula/ interosseous membrane

Insertion- Distal phalanx of Hallux

A

Fibularis (Peroneus) Longus

Action- plantar flexes/ Everts foot

Origin- Head and upper portion of Fibula

Insertion- 1st Metatarsal/ Medial Cuneiform

B

Fibularis (Peroneus) Brevis

Action- plantar flexes/ everts foot

Origin- Distal portion of the Fibular shaft

Insertion- proximal end of 5th Metatarsal

C

Extensor Digitorum Longus

Action- prime mover of toe extension/ dorsiflexes foot

Origin- Lateral condyle of Tibia/ proximal 3/4 of Fibula/ interosseous membrane

Insertion- Middle and Distal phalanges of toes 2-5

D

Extensor digitorum brevis

A

Gastrocnemius (medial head)

Action- plantar flexes foot (when knee is extended)/ crosses knee joint/ Flexes knee/ leg (when foot is dorsiflexed)

Origin- Medial/ lateral condyles of Femur

Insertion- Calcaneus

B

Gastrocnemius (lateral head)

Action- plantar flexes foot (when knee is extended)/ crosses knee joint/ Flexes knee/ leg (when foot is dorsiflexed)

Origin- Medial/ lateral condyles of Femur

Insertion- Calcaneus

C

Popliteus

Action- flexes/ rotates leg/ unlocks knee (when knee flexion begins)

Origin- Lateral condyle of the Femur/ lateral meniscus

Insertion- Proximal Tibia

D

Soleus

Action- plantar flexion/ locomotion

Origin- Proximal portion of Tibia/ Fibula/ interosseous membrane

Insertion- Calcaneus

E

Calcaneal tendon

A

Flexor Digitorum Longus

Action- flexes toes / plantar flexes and inverts foot

Origin- Posterior surface of the Tibia

Insertion- distal Phalanges of toes 2-5

B

Flexor Hallucis Longus

Action- flexes Hallux/ plantar flex and inverts foot

Origin- middle Fibular shaft and interosseous membrane

Insertion- distal phalanx of hallux

C

Popliteus

Action- flexes/ rotates leg/ unlocks knee (when knee flexion begins)

Origin- Lateral condyle of the Femur/ lateral meniscus

Insertion- Proximal Tibia

D

Tibialis Posterior

Action- prime mover of foot Inversion/ plantar flexes foot/ stabilizes longitudinal arch of foot

Origin- superior portion of Tibia/ Fibula/ interosseous membrane

Insertion- Several Tarsals/ Metatarsals 2-4

A

Extensor digitorum brevis

B

Extensor hallucis brevis

C

Interosseous muscle of the foot

A

Iliopsoas

Action- flex trunk at hip point/ flex thigh/ lateral flexion of vertebral column

Origin- Iliac Fossa/ Iliac crest/ lateral Sacrum/ transverse processes/ bodies and discs of T12/ Lumbar vertebrae

Insertion- (On and just below) Lesser trochanter of the Femur

B

Adductor Longus

Action- adduct/ medially rotate and flex thigh

Origin- pubis near pubic symphysis

Insertion- Linea Aspera

C

Sartorius

Action- flexes/ abducts/ laterally Rotates thigh/ flexes knee/ leg/ effects cross-legged position

Origin- Anterior superior Iliac spine

Insertion- Aponeurosis into medial aspect of proximal Tibia

D

Gracilis

Action- adducts thigh/ flexes and medially rotates leg (during walking)

Origin- inferior Pubic ramus/ Body of Pubis

Insertion- medial Surface of Tibia, inferior to Medial Condyle

E

Adductor Magnus

Action- adduct/ medially rotate and flex thigh/ synergist in thigh extension

Origin- Ischial ramus/ Pubic ramus/ Ischial tuberosity

Insertion- Linea Aspera of Femur/ adductor Tubercle of Femur

A

Tensor Fascia Latae

Action- flexes/ abducts/ medially rotates thigh/ steadies trunk

Origin- anterior aspect of Iliac Crest/ anterior superior Iliac spine

Insertion- Iliotibial Tract

B

Rectus Femoris

Action- extends knee/ leg/ flexes thigh hip

Origin- Anterior inferior Iliac spine/ superior margin of Acetabulum

Insertion- Tibial Tuberosity/ Patella

A

Tensor Fascia Latae

Action- flexes/ abducts/ medially rotates thigh/ steadies trunk

Origin- anterior aspect of Iliac Crest/ anterior superior Iliac spine

Insertion- Iliotibial Tract

B

Rectus Femoris

Action- extends knee/ leg/ flexes thigh hip

Origin- Anterior inferior Iliac spine/ superior margin of Acetabulum

Insertion- Tibial Tuberosity/ Patella

C

Vastus Lateralis

Action- extends knee/ stabilizes knee

Origin- Greater trochanter/ intertrochantric line/ linea aspera

Insertion- Tibial Tuberosity/ Patella

D

Sartorius

Action- flexes/ abducts/ laterally Rotates thigh/ flexes knee/ leg/ effects cross-legged position

Origin- Anterior superior Iliac spine

Insertion- Aponeurosis into medial aspect of proximal Tibia

E

Vastus Medialis

Action- extends knee/ leg/ stabilizes Patella

Origin- Linea aspera/ intertrochantric line

Insertion- Tibial Tuberosity/ Patella

A

Rectus Femorus

Action- extends knee/ leg/ flexes thigh hip

Origin- Anterior inferior Iliac spine/ superior margin of Acetabulum

Insertion- Tibial Tuberosity/ Patella

B

Vastus Lateralis

Action- extends knee/ stabilizes knee

Origin- Greater trochanter/ intertrochantric line/ linea aspera

Insertion- Tibial Tuberosity/ Patella

C

Quadriceps Tendon

D

Vastus Medialis

Action- extends knee/ leg/ stabilizes Patella

Origin- Linea aspera/ intertrochantric line

Insertion- Tibial Tuberosity/ Patella

A

Vastus Lateralis

Action- extends knee/ stabilizes knee

Origin- Greater trochanter/ intertrochantric line/ linea aspera

Insertion- Tibial Tuberosity/ Patella

B

Quadriceps tendon

C

Patellar ligament

D

Vastus Medialis

Action- extends knee/ leg/ stabilizes Patella

Origin- Linea aspera/ intertrochantric line

Insertion- Tibial Tuberosity/ Patella

E

Vastus Intermedius

Action- extends knee/ leg

Origin- anterior and lateral surface of Femur

Insertion- Tibial Tuberosity/ Patella

A

Adductor Longus

Action- adduct/ medially rotate and flex thigh

Origin- pubis near pubic symphysis

Insertion- Linea Aspera

B

Sartorius

Action- flexes/ abducts/ laterally Rotates thigh/ flexes knee/ leg/ effects cross-legged position

Origin- Anterior superior Iliac spine

Insertion- Aponeurosis into medial aspect of proximal Tibia

C

Gracilis

Action- adducts thigh/ flexes and medially rotates leg (during walking)

Origin- inferior Pubic ramus/ Body of Pubis

Insertion- medial Surface of Tibia, inferior to Medial Condyle

D

Adductor Magnus

Action- adduct/ medially rotate and flex thigh/ synergist in thigh extension

Origin- Ischial ramus/ Pubic ramus/ Ischial tuberosity

Insertion- Linea Aspera of Femur/ adductor Tubercle of Femur

A

Gluteus Maximus

Action- powerful extensor (climbing stairs not walking) / antagonist of Iliopsoas/ laterally rotates/ abducts thigh

Origin- dorsal Ilium/ Sacrum/ Coccyx

Insertion- Gluteal Tuberosity of Femur/ Iliotibial Tract

B

Gluteus Medius

Action- medially rotates/ abducts thigh/ steadies pelvis during walking

Origin- upper lateral surface of the Ilium

Insertion- Greater trochanter of the Femur

C

Tensor Fascia Latae

Action- flexes/ abducts/ medially rotates thigh/ steadies trunk

Origin- anterior aspect of Iliac Crest/ anterior superior Iliac spine

Insertion- Iliotibial Tract

A

Gluteus Maximus

Action- powerful extensor (climbing stairs not walking) / antagonist of Iliopsoas/ laterally rotates/ abducts thigh

Origin- dorsal Ilium/ Sacrum/ Coccyx

Insertion- Gluteal Tuberosity of Femur/ Iliotibial Tract

B

Semitendinous

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

Origin- Ischial tuberosity

Insertion- medial aspect of upper Tibial Shaft

C

Semimembranous

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

Origin- Ischial tuberosity

Insertion- medial Condyle of Tibia/ Lateral Condyle of Femur

D

Biceps Femoris Long head

Action- extends thigh/ laterally rotates Leg/ flexes knee/ leg

Origin- Ischial tuberosity

Insertion- head of Fibula

A

Semitendinous

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

Origin- Ischial tuberosity

Insertion- medial aspect of upper Tibial Shaft

B

Semimembranous

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

Origin- Ischial tuberosity

Insertion- medial Condyle of Tibia/ Lateral Condyle of Femur

C

Biceps Femoris Long head

Action- extends thigh/ laterally rotates Leg/ flexes knee/ leg

Origin- Ischial tuberosity

Insertion- head of Fibula

A

Tibialis Anterior

Action- prime mover of dorsiflexion/ inverts foot/ supports longitudinal arch of the foot

Origin- Lateral condyle/ upper 2/3 of Tibia/ interosseous membrane

Insertion- Inferior surface of 1st cuneiform/ 1st metatarsal

B

Fibularis (Peroneus) Longus

Action- plantar flexes/ Everts foot

Origin- Head and upper portion of Fibula

Insertion- 1st Metatarsal/ Medial Cuneiform

C

Extensor Digitorum Longus

Action- prime mover of toe extension/ dorsiflexes foot

Origin- Lateral condyle of Tibia/ proximal 3/4 of Fibula/ interosseous membrane

Insertion- Middle and Distal phalanges of toes 2-5

A

Fibularis (Peroneus) Longus

Action- plantar flexes/ Everts foot

Origin- Head and upper portion of Fibula

Insertion- 1st Metatarsal/ Medial Cuneiform

B

Extensor Digitorum Longus

Action- prime mover of toe extension/ dorsiflexes foot

Origin- Lateral condyle of Tibia/ proximal 3/4 of Fibula/ interosseous membrane

Insertion- Middle and Distal phalanges of toes 2-5

C

Tibialis Anterior

Action- prime mover of dorsiflexion/ inverts foot/ supports longitudinal arch of the foot

Origin- Lateral condyle/ upper 2/3 of Tibia/ interosseous membrane

Insertion- Inferior surface of 1st cuneiform/ 1st metatarsal

D

Extensor Hallucis Longus

Action- extends great toe/ dorsiflexes foot

Origin- anteromedial shaft of the Fibula/ interosseous membrane

Insertion- Distal phalanx of Hallux

A

Fibularis (Peroneus) Longus

Action- plantar flexes/ Everts foot

Origin- Head and upper portion of Fibula

Insertion- 1st Metatarsal/ Medial Cuneiform

B

Fibularis (Peroneus) Brevis

Action- plantar flexes/ everts foot

Origin- Distal portion of the Fibular shaft

Insertion- proximal end of 5th Metatarsal

C

Extensor Digitorum Brevis

D

Interosseous muscle of foot

E

Extensor Digitorum Longus

Action- prime mover of toe extension/ dorsiflexes foot

Origin- Lateral condyle of Tibia/ proximal 3/4 of Fibula/ interosseous membrane

Insertion- Middle and Distal phalanges of toes 2-5

F

Tibialis Anterior

Action- prime mover of dorsiflexion/ inverts foot/ supports longitudinal arch of the foot

Origin- Lateral condyle/ upper 2/3 of Tibia/ interosseous membrane

Insertion- Inferior surface of 1st cuneiform/ 1st metatarsal

A

Gastrocnemius (Medial Head)

Action- plantar flexes foot (when knee is extended)/ crosses knee joint/ Flexes knee/ leg (when foot is dorsiflexed)

Origin- Medial/ lateral condyles of Femur

Insertion- Calcaneus