1. Lower extremity origin and insertion
Ms. Treto/ PT Academy

2. Lower extremity musculature

3. Semitendinosus Origin – ischial tuberosity Insertion – medial
condyle of tibia
Function – extends
femur/flexes leg

4. Biceps femoris longus Origin – ischial tuberosity
Insertion – fibular head
Function – flexes the knee
and extends the hip

5. Tensor fascia lata Origin – anterior iliac crest
Insertion – lateral condyle of tibia
Function – abducts and flexes
thigh at hip

6. Tibialis anterior Origin – lateral condyle of the tibia
Insertion – medial
cuneiform
Function –
Ankle dorsiflexion
Forefoot inversion

7. gastrocnemius Origin – medial and lateral condyles of femur
Insertion – posterior
calcaneous
Function –
Knee flexion
Ankle plantar flexion

8. Soleus Origin – upper third of fibula Insertion – calcaneous
Function – flexes foot

9. Posterior View

10. Anterior
View