- Peripheral Nervous System—Lower Extremity 65
Common
peroneal
nerve
Tibial nerve
Sural nerve (cutaneous)
Sciatic nerve
(L4 - S3)
Superficial
peroneal
nerve
Deep peroneal nerve
Peroneus longus & peroneus brevis (L5, S1)
Thigh Leg
Fibular
neck
Lateral calcaneal branch &
lateral dorsal cutaneous
nerves
Tibialis anterior (L4, L5)
Ext. digit. longus, ext. hallucis longus,
& peroneus tertius (L5, S1)
Deep m. - tibialis post., flexor digit. longus,
& flexor hallucis longus (L5, S1)
Medial sural cutaneous nerve
Lateral sural cutaneous nerve
Plantar instrinsic
foot muscles (S1- S3)
Foot
Medial and lateral
plantar nerves
Tarsal
Popliteal fossa tunnel
Ext. digit. brevis &
ext. hallucis brevis
(L5, S1)
Sural communicating branch
Medial calcaneal branch
Superficial m. - gastrocnemius & soleus (S1, S2) (cutaneous)
(additional m. - popliteus and plantaris)
DRAWING 4-4 Th e Leg & Foot — Complete