Landmarks In The Lower Extremity Flashcards
Describe the popliteal fossa
It is a diamond shaped depression located behind the knee joint, lower part of femur, upper part of tibia
Popliteal fossa is bounded superolaterally by
Biceps femoris
Popliteal fossa is bounded superomedially by
Semimembranosus and semitendinosus supplemented by gracilis, sartorius and adductor Magnus
Popliteal fossa is bounded inferomedially by
Medial head of gastrocnemius muscle
Popliteal fossa is bounded inferolaterally by
Lateral head of gastrocnemius supplemented by plantaris
Popliteal fossa floor is formed by
Posterior surface of knee joint capsule and posterior surface of femur
Popliteal fossa roof is formed by
Popliteal fascia and skin
List the contents of popliteal fossa
Popliteal artery and it’s branches
Popliteal vein and it’s tributaries
Tibial nerve and it’s branches
Common fibular/peroneal nerve and it’s branches
What content of popliteal fossa lies deep
Popliteal artery
What content of popliteal fossa lies superficial
Tibial nerve
Common fibular/peroneal nerve
(Branches of sciatic nerve)
Popliteal artery divides into
Tibioperoneal trunk
Anterior tibial artery
As the popliteal artery is descending , it also gives rise to many branches along it’s journey. list them
Muscular branches
Genicula branches-superior medial and lateral genicular branch, middle genicular branch, inferior medial and lateral genicular branch
What muscles does the muscular branches supply
Soleus, gastrocnemius, plantaris and hamstring muscles
Superior medial and lateral genicular branch supply
Bone of femoral condyles, adjacent synovium of knee joint, superior part of patella
Middle genicular branch supply
Posterior cruciate ligament, posterior part of anterior cruciate ligament, posterior part of menisci
Inferior medial and lateral genicular branch supply
Knee joint capsule, collateral ligaments and tendon , anterior part of cruciate ligament, inferior part of patella
Where does the popliteal vein begin
It begins at the lower border of popliteus by the union of veins accompanying the anterior and posterior tibial arteries
Tibioperoneal trunk divides into
Posterior tibial artery
Fibular/Peroneal artery
The femoral vein continue as
Popliteal vein
The popliteal vein receives venous drainage from
Saphenous vein
Veins corresponding to branches of popliteal artery
Another name of adductor canal
Hunters canal
Subsartorial canal
What is the adductor canal
It is an intermuscular space located in the medial side of the middle one third of thigh
The adductor canal extends from
Apex of femoral triangle above the tendinous opening in the adductor Magnus
Adductor canal is bounded anterolaterally by
Vastus medialis
Adductor canal is bounded anteromedially by
Sartorius
Adductor canal is bounded posteromedially by
Adductor Longus above
Adductor Magnus below
List the contents of adductor canal
Terminal part of femoral vein
Terminal part of femoral artery
Terminal part of obturator nerve
Saphenous nerve
Nerve to vastus medialis
Deep lymph nodes
What is the femoral triangle
A wedged shaped depression in the superomedial aspect of thigh
Femoral triangle is bounded medially by
Medial border of adductor Longus
Femoral triangle is bounded laterally by
Medial border of sartorius
Femoral triangle is bounded superiorly by
Inguinal ligament
Femoral triangle roof is formed by
Superficial fascia (fascia lata) and skin
Femoral triangle floor is formed by
Medially by adductor Longus and pectineus
Laterally by iliopsoas
List the contents of femoral triangle
Femoral artery and it’s branches
Femoral vein and it’s tributaries
Femoral nerve and it’s branches
Nerve to pectineus
Lateral cutaneous nerve of thigh
Femoral branch of genitofemoral nerve
Femoral sheath
Deep inguinal lymph node
Femoral sheath is formed by
Downwards extension of the two layers of fascia in the abdomen
What is the femoral sheath
A funnel shaped fascia covering upper 3-4cm of the femoral vessels
Anterior wall is bounded by
Transversalis fascia
Posterior wall is formed by
Iliacus fascia
Femoral sheath is divided into 3 compartments by
Septa
List the components of the arterial or lateral component of femoral sheath
Femoral artery
Femoral branch of genitofemoral nerve
List the component of the intermediate or venous compartment of femoral sheath
Femoral vein
List the component of the lymphatics or medial compartment of femoral sheath
Femoral canal
What is the intercondylar fossa
It is a depression between the two femoral condyles
The intercondylar fossa provides attachment for
Anterior and posterior cruciate ligament
What muscle forms the base of the popliteal fossa
Popliteus
Gap between sacrum and ilium is bridged by
Sacrospinous ligament- goes to ischial spine
Sacrotuberous ligament-goes to ischial tuberosity
Capsule of hip joint is formed by
Iliofemoral ligament( thickest )
Ischiofemoral ligament
Pubofemoral ligament
What unites the pelvis
Sacroilial joint
Pubic symphysis
What is the femoral canal
It is the medial compartment of the femoral sheath
Approximately 1.3cm long
Where is the femoral canal located
Located within the femoral triangle in the anterior thigh
The opening of the femoral canal is called what
Femoral ring
The femoral ring is located where
At the superior border of the femoral canal
The femoral ring is covered by a connective tissue layer known as
Femoral septum
Femoral canal is bounded laterally by
Femoral vein
Femoral canal is bounded medially by
Lacunar ligament
Femoral canal is bounded anteriorly by
Inguinal ligament
Femoral canal is bounded posteriorly by
pectineal ligament, superior pubic ramus and the pectineus muscle
Contents of femoral canal
Lymphatic vessels – draining the deep inguinal lymph nodes.
Deep lymph node – the lacunar node.
Empty space.
Loose connective tissue.
Function of the empty space in femor al canal
The empty space allowsdistensionof the adjacent femoral vein, so it can cope with increased venous return, or increased intra-abdominal pressure.
Most common clinical correlate of the femoral canal
Femoral hernia-femoral canal is a common site of herniation
Femoral hernia is more common in what sex and why
More common in females due to their wide bony pelvis
What is the tarsal tunnel
Itis a fibro-osseous space located on the posteromedial aspect of the ankle.
The tarsal tunnel serves as what
It acts as apassagewayfor tendons, nerves and vessels to travel between the posterior leg and the foot.
Contents of Tarsal tunnel
Tibialis posterior tendon
Flexor Digitorum Longus Tendon
Posterior tibial artery
Posterior tibial vein
Tibial nerve
FlexorHallucis longus tendon
Tarsal tunnel is formed by what
Bony floor
Connective tissue roof
The bony floor is formed by
It is a concave surface formed by the medial aspect of the tibia, talus and calcaneus.
Roof of tarsal tunnel is formed by
It is formed by the flexor retinaculum extending from the medial malleolus to the medial tubercle of the calcaneus.
Flexor retinaculum is continuous with what
Deep fascia of leg and foot
Clinical correlates
Tarsal tunnel syndrome