Unit 3- Popliteal Fossa Flashcards
Superolateral boundary of the popliteal fossa
Biceps femoris
Superomedial popliteal fossa
Semimembranosus
Semitendinosus
Inferomedial boundary of politeal fossa
Medial head of gastrocnemius
Inferolateral border of the popliteal fossa
Lateral head of gastrocnemius
Posterior boundary of popliteal fossa
Skin and popliteal fascia
Anterior boundary of popliteal fossa
Popliteal surface of the femur
Medial and lateral supracondylar lines
Posterior capsule of the knee joint
Popliteal fascia covering the popliteal muscle forming the floor of the fossa
Contents of the popliteal fossa
Popliteal art and vein (with branches and tributaries)
Termination of the small saphenous vein
Tibial and common fibular nerve
Post cutaneous nerve of the thigh
Popliteal lymph nodes and vessels
Popliteal fossa contents are arranged—- superficial to deep
Superficial fascia
Nerves
Veins
Arteries
Joint capsule
Subcutaneous tissue overlying the fascia contains:
Fat, small saphenous vein and cutaneous nerves
Cutaneous nerve of the fascia
Post cutaneous nerve of the thigh
Medial cutaneous sural nerve
Lateral cutaneous sural nerve
Sural nerve
Deep fascia that forms a protective sheet overlying the neurovascular structures
Popliteal fascia
Popliteal fascia is continuous with the:
Fascia lata of the thigh and deep fascia of the leg
Popliteal fascia forms a loose retinaculum for:
The hamstring tendons as they cross the knee
What happens when the fascia is extended
It stretches taught and the semimembranosus moves lateral to cover the fossa’s contents
What is the popliteal artery a continuation of?
The femoral art
As it moves from the ant compartment of the thigh to the post compartment of the LEG
The popliteal art transversus the ____ ____ and divides into:
Popliteal fossa
Anterior and posterior tibial arteries at the inferior border of the fossa
What branches surround the joint capsule and ligaments?
5 genicular branches
Genicular arteries (5)
Superior lateral genicular
Superior medial genicular
Middle genicular art
Inf lateral genicular
Inf medial genicular
What artery is the major supply to knee ligaments and synovial joint capsule?
Middle genicular art
What maintains flow around the knee during full flexion
Peri-genicular collateral circulation
Review slides 11 and 12 for peri-articular anastomose
Slides 11 and 12
Muscular popliteal branches go to the:
Hamstrings
Gastrocnemius
Soles
Plantaris
Where is the popliteal vein formed?
At the distal end of the popliteal fossa
By a continuation of the post tibial vein
The popliteal transversus the ____ with the _____ in a:
Fossa
Artery
Fibrous sheath
After the fossa, the popliteal vein changes to the:
Femoral vein at the adductor hiatus
Small saphenous vein passes from:
Posterior of the lateral malleolus
To the popliteal fossa where it pierces the fascia sheath to enter the popliteal vein (may enter the post tibial branch)
Superficial popliteal lymph nodes are located where?
In the subcutaneous tissue
Deep popliteal lymph nodes are located where?
Around the popliteal vessels
Popliteal lymph nodes drain proximally to the:
Deep inguinal nodes
Sciatic nerve splits at the:
Superior angle of the popliteal fossa
Sciatic nerve splits to form the:
Tibial nerve
Common fibular nerve
Tibial nerve is formed by:
Anterior divisions of the ant rami of L4-S3
Which nerve is the medial, larger and more superficial branch of the sciatic nerve in the fossa?
Tibial nerve
The tibial nerve ______ the fossa as it passes to the:
Bisects
Inferior angle of the fossa
Tibial nerve supplies the:
Soles
Gastrocnemius
Plantaris
Popliteus
Cutaneous branch of the tibial nerve
Medial sural cutaneous nerve
The medial sural cutaneous nerve is joined by:
Sural communicating branch from the common fibular
Sural nerve provides sensation from the:
Lateral side of the leg and ankle
Common fibular nerve is formed by:
Posterior division of ant rami of L4-S2
The common fibular nerve is the _____ and ______ branch of the sciatic nerve in the fossa
Lateral
Smaller
Common fibular nerve follows the:
Medial border of the biceps femoris muscle and tendon
The common fibular nerve patheway:
passes superficial to the:
Lateral head of the gastrocnemius
Passes over the post aspect of the head of the fibula
Then wraps around the fibular neck and descends anterior-medially forming terminal branches
Terminal branches of the common fibular nerve
Superficial fibular nerve
Deep fibular nerve
Superficial fibular nerve supplies:
Fibularis longus
Fibularis brevis
Skin of distal anterior leg and Dortmund of the foot
Seep fibular nerve supplies the:
Tibialis anterior
Extensor hallucinate longus
Extensor digitorum longus
Muscles of dorsal of foot
What supplies the skin over the popliteal fossa?
Posterior cutaneous nerve
