Muscles of the lower limbs-Anatomy-(latest post 2020)

Muscles of the lower limbs
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Muscles of the lower limbs

1. Iliacus

www.physioscare.com


Origin: Iliac fossa of ilum, crest of coxa
Insertion: Lesser tronchanter (Femur)
Action: Flexes  thigh
Nerve supply: Femoral nerve

2. Psoas major

Psoas major-www.physioscare.com

Origin: T12-L5 vertebrae
Insertion: Lesser tronchanter (Femur)
Actions: Flexes /abducts / laterally rotates thigh
Nerve supply: Femoral nerve

3. Tenser fasciae latae

Tenser fasciae latae- www.physioscare.com

Origin: Iliac crest ( ilum), anterior superior iliac spine (ilium)
Insertion: Iliotibal tract ( Connective tissue)
Action: Flexes /Abducts thigh
Nerve supply: Gluteal nerves

4. Sartorius

Sartorius- www.physioscare.com



Origin: Anterior superior iliac spine ( ilium)
Insertion: Medial surface of proximal tibia
Action: Flexes / Abducts / laterally rotates  thigh
Nerve supply: Femoral nerve

5. Pectineus

Pectineus- www.physioscare.com

Origin: Pubis
Insertion: Lesser tronchanter ( Femur)
Action: Adducts / flexes/ medially rotates thigh
Nerve supply: Obturator nerve

6. Adductor brevis

Adductor brevis- www.physioscare.com



Origin: Pubis
Insertion: Linea aspera( femur)
Action: Adducts/ Flexes/ medially rotates thigh
Nerve supply: Obturator nerve

7. Adductor longus

 Adductor longus- www.physioscare.com



Origin: Pubis
Insertion: Linea apsera ( femur)
Action: Adducts/ Flexes/ medially rotates thigh
Nerve supply: Obturator  nerve

8. Adductor magnus

Adductor magnus- www.physioscare.com

Origin: Pubis / Ischium
Insertion: Linea apsera ( femur)
Action: Adducts/ Flexes/ medially rotates thigh
Nerve supply: Obturator nerve/ Sciatic nerve

9. Rectus femoris

 Rectus femoris- www.physioscare.com



Origin: AIIS ( ilium), Margin of acetabulum
Insertion: Tibial tuberosity
Action: Extends lower legs
Nerve supply: Femoral nerve

10. Gracilis

Gracilis- www.physioscare.com

Origin: Pubis / ischium
Insertion: Medial surface of proximal tibia
Action: Adducts / Flexes / Medially rotates thigh
Nerve supply: Obturator nerve

MUSCLE  MOVING POSTERIOR  OF THIGH

1. Gluteus maximas

Gluteus maximas- www.physioscare.com


Origin: Ilium/ Sacrum / coccyx
Insertion: Iliotibal tract ( connective tissue), gluteal tuberosity ( femur)
Action: Extends thigh
Nerve supply: Gluteal nerves

2. Gluteus medius

Gluteus medius- www.physioscare.com



Origin: Lateral surface of ilium
Insertion: Greater tronchanter ( femur)
Action: Abducts/medially rotates thigh
Nerve supply: Gluteal nerve

3. Gluteus minimus

Gluteus minimus- www.physioscare.com



Origin: Lateral surface of ilium
Insertion: Greater tronchanter ( femur)
Action: Abducts/medially rotates thigh
Nerve supply: Gluteal nerve

4. Piriformis

Piriformis www.physioscare.com


Origin: Anterolateral surface of sacrum
Insertion: Greater tronchanter (Femur)
Action: Laterally rotates thigh

5. Obturator

 Obturator- www.physioscare.com


Origin: Pubis/ ischium
Insertion: Greater  tronchanter (Femur)
Action: Laterally rotates thigh

6. Quadratus femoris

Quadratus femoris- www.physioscare.com



Origin: Ischial tuberosity  (ischium)
Insertion: Proximal end of femur
Action: Laterally rotates thigh

7. Biceps femoris (Part of hamstrings)

Biceps femoris- www.physioscare.com


Origin: Ischial tuberosity (ischium), linea apsera (Femur)
Insertion: head (fibula), lateral condyle (tibia)
Action: Flexes (lower) leg
Nerve supply: Sciatic nerve

8. Semitendious (Part of hamstring)

Semitendious- www.physioscare.com
 

Origin: Ischial tuberosity (ischium)
Insertion: Medial surface of tibia
Action: Flexes (lower) leg
Nerve supply: Sciatic nerve

9. Semimembranosus (part of hamstrings)

Semimembranosus- www.physioscare.com

Origin: Ischial tuberosity (Ischium)
Insertion: Medial condyle ( tibia)
Action: Flexes (Lower) leg
Nerve supply: Sciatic nerve

10. Popliteus

Popliteus- www.physioscare.com



Origin: Lateral condyle (femur)
Insertion: Proximal tibia
Action: Flexes / medially rotates (lower) leg
Nerve supply: Sciatic nerve

11. Gastrocnemius (Part of triceps surae)

Gastrocnemius- www.physioscare.com

Origin: Medial /lateral condyle (femur)
Insertion: Calcaneus
Action: Plantar flexes foot
Nerve supply: Tibial nerve

12. Soleus ( part of tricep surae)

Soleus - www.physioscare.com

Origin: Proximal tibia / fibula
Insertion: Calcaneus
Action: Plantar flexes foot
Nerve supply: Tibial nerve

13. Plantaris

 Plantaris- www.physioscare.com



Origin: Posterior femur
Insertion: calcaneus
Action: plantar flexes foot
Nerve supply: Tibial nerve

14. Flexor digitorum longus

Flexor digitorum longus- www.physioscare.com

Origin: Posterior tibia
Insertion: Distal phalanges 2-5
Action: Flexes toes
Nerve supply: Tibial nerve

15. Flexor hallicus longus

Flexor hallicus longus- www.physioscare.com



Origin: Midshaft of fibula
Insertion: Distal phalanx ( Great toe)
Action: Flexes great toe
Nerve supply: Tibial nerve

16. Tibialis posterior

Tibialis posterior- www.physioscare.com

Origin: Proximal tibia/ fibula
Insertion: Tarsals, metatarsals 2-4
Action: Inverts foot
Nerve supply: Tibial nerve

ANTERIOR OF THIGH-MUSCLE

1. Vastus lateralis( part of quadriceps)

Vastus lateralis- www.physioscare.com

Origin: Greater tronchanter, linea aspera (femur)
Insertion: Tibial tuberosity ( tibia)
Action: Extends ( lower) leg
Nerve supply: Femoral nerve

2. Vastus medialis ( quadriceps)

Vastus medialis - www.physioscare.com

Origin: Anterior, lateral surface of proximal femur
Insertion: Tibial tuberosity ( Tibia)
Action: Extends lower leg
Nerve supply: Femoral nerve

3. Vastus intermedius ( quadriceps)

Vastus intermedius - www.physioscare.com


Origin: Anterior,lateral surface of proximal femur
Insertion: Tibial tuberosity (Tibia)
Action: Extends lower leg
Nerve supply:Femoral nerve

4. Tibialis anterior

Tibialis anterior- www.physioscare.com


Origin: Lateral condyle of tibia, shaft of tibia
Insertion: Medial cuneiform (Tarsals)  metatarsal 1
Action: Dorisflexion/ inverts foot
Nerve supply: Fibular nerve

5. Extensor digitorum  longus

Extensor digitorum  longus- www.physioscare.com

Origin: Lateral condyle (tibia), proximal fibula
Insertion: Middle/Distal phalanges 2-5
Action: Extends toes
Nerve supply: Fibular merve.


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