Lower extremity origin and insertion Ms. Treto/ PT Academy

Lower extremity musculature

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

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

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

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

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

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

Posterior View

Anterior View