overview

Anterior Compartment

• Muscles: Tibialis anterior, extensor digitorum longus, extensor hallucis longus

• Function: Dorsiflexion (lift foot), toe extension

• Role: Prevent foot drop; control walking

Lateral Compartment

• Muscles: Fibularis (peroneus) longus & brevis

• Function: Eversion (turn foot outward), assist plantarflexion

• Role: Ankle stability

Posterior Compartment

Superficial:

• Muscles: Gastrocnemius, soleus

• Function: Plantarflexion

• Role: Push-off in walking/running

Deep:

• Muscles: Tibialis posterior, flexor digitorum longus, flexor hallucis longus

• Function: Toe flexion, arch support

• Role: Stability and balance