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Popliteal Fossa
is an anatomical region behind knee with certain boundaries.
bones of popliteal fossa are:
•
•
femur (medial and lateral condyle)
Tibia (medial and lateral condyle)
boundaries are:




- semitendinosus (ST)
- medial head of gastrocnemius (MG)
- biceps femoris (B)
- lateral head of gastrocnemius (LG)
muscles of popliteal fossa are:
Muscles
1. - semitendinosus (ST)
2. - medial head of gastrocnemius (MG)
3. - biceps femoris (B)
4. - lateral head of gastrocnemius (LG)
Arteries
–popliteal artery

is continuation of femoral artery
superior medial and lateral genicular art
inferior medial and lateral genicular art
Nerves
1. Tibial n
2. Common peroneal n


superficial vein: small saphenous
Superficial: posterior cutanous n of thigh
floor of popliteal fossa:
1.
2.
3.
4.
posterior surface of femur
posterior surface of tibia
Oblique popliteal lig.
Popliteus m
Oblique popliteal lig
cruciate anastomosis of thigh:

involves links between
1.
2.
3.
4.
inferior gluteal artery (from internal iliac artery)
medial circumflex femoral artery ,
lateral circumflex femoral artery,
first perforating branch of deep femoral artery.
all arise from deep femoral artery,
is a branch of femoral artery, which is continuation of external iliac
artery.
other anastomoses between branches of :
external iliac artery and
internal iliac artery,
1.
2.

often via arteries of abdominal wall.

All of these can help supply blood to lower limb in event of an obstruction of external iliac
artery.
genicular anastomosis
in the region of knee is also very important.
It involves ten vessels.

Two from above
1.
2.


•
descending branch of lateral circumflex femoral artery
descending genicular branch (highest genicular) of femoral artery),
five from popliteal artery,
and three from below, usually branches of anterior tibial
artery.
This system can help supply blood to leg in event of an
obstruction of femoral artery below branching-off of
deep femoral artery.

anterior compartment, leg: a connective tissue
compartment that contains muscles that dorsiflex the
ankle; its boundaries are: tibia, fibula, interosseous
membrane, anterior intermuscular septum

anterior compartment of the leg contains
the tibialis anterior m.,
extensor hallucis longus m.,
extensor digitorum longus m.,
peroneus tertius m.; it also contains the anterior tibial a.
and the deep peroneal n.; also known as: extensor
compartment of the leg
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
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