Actions of the Muscles of the Lower Extremity


Hip Flexion
Iliopsoas

Hip Extension
Gluteus maximus

Thigh Adduction
Adductor longus
Adductor magnus
Gracilis

Internal Rotation of the Thigh
Gluteus medius

Knee Extension
Quadriceps, rectus femoris
Quadriceps, vastus lateralis
Quadriceps, vastus medialis

Knee Flexion
Hamstring external, biceps femoris long head
Hamstring external, biceps femoris short head
Hamstring internal, semimembranosus and semitendinosus

Plantar Flexion
Gastrocnemius, lateral head
Gastrocnemius, medial head
Peroneus longus
Posterior tibialis
Soleus

Dorsiflexion
Anterior tibialis

Toe Abduction
Abductor digit quinti
Abductor hallucis

Toe Extension
Extensor digitorum longus
Extensor hallucis longus

Toe Flexion
First dorsal interosseous
 
 
 
 
 
 
 
 
 
 
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