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Muscles of the Lower Extremity Inferior Half

Muscles of the Lower Extremity Inferior Half. Hip Leg Foot. Hip. Gluteus Maximus Gluteus Medius. Gluteus Maximus. Function : Extends and rotates the thigh Origin : Pelvis and sacrum Insertion : Femur (posterior) . Gluteus Medius. Function : Extends and rotates the thigh

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Muscles of the Lower Extremity Inferior Half

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  1. Muscles of the Lower ExtremityInferior Half Hip Leg Foot

  2. Hip • Gluteus Maximus • Gluteus Medius

  3. Gluteus Maximus • Function: Extends and rotates the thigh • Origin: Pelvis and sacrum • Insertion: Femur (posterior)

  4. Gluteus Medius • Function: Extends and rotates the thigh • Sits above the gluteus maximus • Origin: pelvis (posterior) • Insertion: top of femur

  5. Upper Leg • Sartorius • Quadriceps Muscles • Hamstring Muscles

  6. Sartorius • Function: flexes lower leg • Longest muscle in the body (anterior) • Origin: pelvis • Insertion: medial side of tibia Muscle you use to: - Play “Hacky Sack” - Cross your legs – “Man style”

  7. Quadriceps Muscles • Quadriceps • 4 muscles make up the “Quad” on the anterior side of leg • VastusMedialis • VastusIntermedius • VastisLateralis • Rectus femoris • Function: Extends the leg & knee and flexes of the hip & thigh

  8. Quadriceps (Quads) • Origin: Lower part of the pelvis and top of the femur • Insertion:patella (knee cap) • VastusMedialis (VMO) • Located on the inside of your thigh • VastusIntermedius • Located next to the vastuslateralis • VastusLateralis • Located on the outside of your thigh • Rectus Femoris • Located next to the sartorius • Goes over all the vastus muscles and sits on top

  9. Hamstring Muscles • 3 muscles make up the hamstring • Biceps Femoris • Semimembranosus • Semitendinosus • They are located on the posterior side of the leg • Function: Flexes the knee and extends the thigh

  10. Hamstring Muscles • Origin: Back ofPelvis • Insertion:Tibia(medial & lateral) • Biceps Femoris • Lateral (insertion)hamstring muscle • Semimembranosus • Most Medial (insertion)hamstring muscle • Semitendinosus • Medial (insertion)hamstring muscle

  11. Lower Leg • Tibialis Anterior • Extensor DigitorumLongus • Peroneus (Fibularis)Longus • Peroneus (Fibularis)Brevis • Gastrocnemius(Calf) • Soleus (Calf) • Flexor DigitorumLongus

  12. Tibialis Anterior • Function: flexes the foot muscle on your shin bone • Origin: Tibia • Insertion: Metatarsal

  13. Extensor Digitorum Longus • Function: Moves your toes/digits 2-5 • Origin: top of tibia and fibula • Insertion: Phalanges (2-5) • Located next to tibialisanterior on the outside of the leg

  14. Peroneus Longus • Function: Flexes the foot; archsupport muscle (side of leg) • Origin: Fibula • Insertion: Bigtoe (1st metatarsal)

  15. Peroneus Brevis • Function: Flexesfoot; archsupport muscle • Origin: shaft of fibula • Insertion: your little toe (outside lower leg)

  16. Gastrocnemius • Function: (posterior) bends the knee; points the toes or plants the foot down • Origin: bottom of the femur • Insertion: heel bone (calcaneus)

  17. Soleus • Function: (posterior) extends or depresses the foot when standing or walking; points the foot down • Origin: tibia and fibula • Insertion: heel bone (calcaneus)

  18. Flexor DigitorumLongus • Function Flexes Second Through Fifth Toes, Inverts Foot, Weak Plantar Flexion Of Ankle • Origin Middle Posterior Surface Of Tibia • Insertion Distal Phalanges Of Second Through Fifth Toes

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