Common fibular nerve
Tibial nerve
Posterior
femoral
cutaneous
nerve
Common
fibular
nerve
Tibial
nerve
Biceps femoris
(long head)
Sciatic nerve*
Semitendinosus
Adductor magnus
Semimembranosus
Gastrocnemius
Gastrocnemius
Soleus
Tibialis
posterior
Plantaris
Popliteus
Flexor
digitorum
longus
Flexor
hallucis
longus
Fibularis
brevis
Tibialis
anterior
Abductor hallucis
Flexor digitorum brevis
Flexor hallucis brevis
Lumbricals
All other muscles
of the sole
Fibularis
longus
Fibularis tertius
Extensor
digitorum
longus
Extensor
digitorum
brevis
Extensor
hallucis
longus
Biceps femoris
(short head)
Cutaneous innervation
Muscular innervation of
posterior thigh and leg
Muscular innervation of
lateral and anterior leg
L4
L5
S1
S2
S3
*Sciatic nerve formed by tibial and common fibular
nerves wrapped by common sheath.
Anterior view
Posterior view
The nerves from the
sacral plexus
innervate the muscles in the posterior
compartments of the thigh and all of the muscles in the leg, and supply
cutaneous innervation to the lateral and posterior portions of the leg and
to the foot.
A-17
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