back of the thigh--> middle of the popliteal fossa-->between the 2 heads of the gastrocnemius and deep to soleus. Descends w/ the POST tibial vessels between the superficial & deep groups of muscles lying on the TIB POST. --> between the MED maleolus and tendo calcaneus ends under the flexor retinaculum
What does the tibial nerve divide into?
medial and LAT plantar nerves
MED sural cutaneous nerve
arises from the tibial nerve in the popliteal fossa --> combines with lateral sural nerve
LAT sural cutaneous nerve
branch of the common fibular nerve, joined by the medial sural cutaneous nerve
made by the combination of the Medial and Lateral sural nerves
supplies the skin on the posterolateral lower 1/3 of the leg and the LAT side of the foot and little toe
Path of the common fibular nerve
follows tendon of biceps femoris along LAT side of popliteal fossa. --> around neck of fibula between the fibula and fibularis longus it divides into 2 terminal branches
what are the 2 terminal branches of the
superficial and deep fibular nerves
lateral sural cutaneous nerve
branch of common fibular nerve.
supplies the skin on the upper 2/3 of the leg
superficial fibular nerve feature
between fibularis longus and brevis (innervates these) then becomes cutaneous neve
What does superficial fibular nerve branch into?
medial and lateral cutaneous branches
Cutaneous supply of the superficial fibular nerve?
skin on the anterolateral lower 1/3 of leg and dorsum of the foot except the adjacent sides of 1st and 2nd toes
deep fibular nerve
in front of the interosseous membrance along the ANT tibial vessels and continues onto the dorsum of the foot.
innervates all ANT crural muscles
from femoral artery once it passes behind knee through the hiatus of the adductor magnus. to lower border of popletues
what does popliteus divide into?
ANT and POST tibial arteries
Sural branches of popliteal artery supply?
superficial group of calf muscles
genicular branches of popliteal
anastamose around the knee.
5 branches. MED, LAT, SUP, middle, and MED
ANT Tib artery
passes between the tibia and fibula above the interoseous membrane to the front of the leg. descend on the interosseous membrane along with deep fibular nerve to foot
What the ANT tibialis artery become?
dorsalis pedis artery when it crosses the ankle joint
What does ANT tib supply?
ANT muscles of leg. Recurrent and malleolar branches join the anastomotic networks around the knee and ankle
POST tibial artery
accompanies the tibial nerve down the calf to the flexor retinaculum where it divides
what does the POST tibial artery divide into?
Medial and Lateral plantar branches
What does the POST tibial artery supply?
soleus and the deep muscles of the calf.
largest branch of posterior tibial
arises below the popliteus and descneds near the fibula deep to the flexor hallucis longus.
What does the fibular artery supply?
deep muscles of the calf and fibular (peroneal) muscles)