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Lower leg (Nerves of the leg (Saphenous (Origin: Femoral nerve (Descends…

- - - - Plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint
        
        Tibial nerve
    - - Plantarflexes ankle independent of position of knee; steadies leg on foot
        
        Tibial Nerve
    - - Weakly assists gastrocnemius in plantarflexing ankle
        
        Tibial nerve
  - - - weakly flexes knee and unlocks it by rotating femur 5 degrees on fixed tibia; medially rotates tibia of unplanted limb
        
        Tibial nerve
    - - Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot
        
        Tibial nerve
    - - Flexes lateral four digits; planterflexes ankle; supports longitudinal arches of foot
        
        Tibial nerve
    - - Plantarflexes ankle; inverts foot
        
        Tibial nerve
- - - - Deep fibula nerve
  - - - Deep fibula nerve
  - - - Deep fibular nerve
  - - - Deep fibula nerve
- - - - Superficial fibular nerve
  - - - Superficial fibular nerve
- - - - Descends with femoral vessels through femoral triangle and adductor canal and then descends with great saphenous vein
        
        Supplies skin on medial side of ankle and foot
  - - - Descends between heads of gastrocnemius and becomes superficial at middle of leg; descends superficial at middle of leg; descends with small saphenous vein
        
        Supplies skin on posterior and lateral aspects of and lateral side of foot
  - - - Forms as sciatic bifurcates at apex of popliteal foss; descends through popliteal fossa and lies on popliteus; runs inferiorly on tibialis posterior with posterior tibial vessels; terminates beneath flexor retinaculum by dividing into medial and lateral plantar nerves
        
        Supplies posterior muscles of leg and knee joint
  - - - Forms as sciatic bifurcates at apex of popliteal fossa and follows medial border of biceps femoris and its tendon; passes over posterior aspect of head of fibula and then winds around neck of fibula deep to fibularis longus, where it divides into deep and superficial fibular nerves
        
        Supplies skin on lateral part of posterior aspect of leg via the lateral sural cutaneous nerve; also supplies knee joint via its articular branch
  - - - Arises between fibularis longus and neck of fibula and descends in lateral compartment of leg; pierces deep fascia at distal third of leg to become subcutaneous
        
        Supplies fibularis longus and brevis and skin on distal third of anterior surface of leg and dorsum of foot
  - - - Arises between fibularis longus and neck of fibula; passes through extensor digitorum longus and descends on interosseous membrane; crosses distal end of tibia and enters dorsum of foot
        
        Supplies anterior muscles of leg, dorsum of foot, and skin of first interdigital cleft; sends articular branches to joints it crosses