QUIZ 7 Flashcards
this is a diamond shaped depression located at the posterior of the knee region. The fossa bulges posteriorly when the knee is extended and becomes depressed when the knee is flexed
popliteal fossa
clinically the popliteal fossa is important why?
pulse of the popliteal artery can be palpated here in addition to the popliteal lymph nodes
what are the borders of the popliteal fossa?
superomedial border- semimembranosus and semitendinosus passing onto insertion
superlateral border- formed by the biceps femoris muscle
inferomedial border- formed by the medial head of the gastrocnemius muscle after is arises from the femur
inferolateral border- plantaris and lateral head of the gastrocnemius muscle
what boundaries comprise the popliteal fossa?
borders
roof
floor
what makes the roof of the popliteal fossa?
superficial fascia and deep fascia
this boundary of the popliteal fossa makes up the posterior border and is formed by the skin and fascia
roof of the popliteal fossa
this boundary of the popliteal fossa makes up the anterior border?
floor of the popliteal fossa
what makes up the floor of the popliteal fossa?
- popliteal surface of the femur
- oblique popliteal ligament
- popliteus muscle and its fascial covering
what are the contents of the popliteal fossa?
popliteal artery popliteal vein tibial n -medial sural cutaneous n common fibular nerve -lateral sural cutaneous n -fibular communicating nerve
name the branches of the popliteal artery?
superior medial genicular artery
superior lateral genicular artery
sural arteries
middle genicular artery
inferior medial genicular artery
inferior lateral genicular artery
anterior tibial artery
- posterior tibial recurrent artery
- anterior tibial recurrent artery
posterior tibial artery
- circumflex fibular artery
- fibular artery/peroneal artery
what are the contents of the genicular anastomosis?
descending genicular artery/highest genicular artery
descending branch of the lateral femoral circumflex artery
superior medial genicular artery
superior lateral genicular artery
inferior medial genicular artery
inferior lateral genicular artery
anterior and posterior tibial recurrent artery
circumflex fibular artery
which of the genicular arteries is not part of the genicular anastomosis?
middle genicular artery
what are the articulations of the knee joint?
patella and the femur
femur and the tibia
what is the functional classification of the knee joint?
diarthrosis
what is the structural classification of the knee joint?
synovial ginglymus/synovial hinge/synovial bicondylar
what is the arterial supply of the knee joint?
genicular anastomosis and middle genicular a
innervation of the knee joint?
obturator nerve
femoral nerve
tibial nerve
common fibular nerve
what are the support structures of the knee joint?
capsule and retinacula
what are the different types of retinacula?
medial patellar retinaculum -medial patellofemoral ligament lateral patellar retinaculum -lateral patellofemoral ligament tight retinaculum
what are the extracapsular ligaments or extrinsic ligaments fo the knee joint posteriorly? anteriorly?
medial genual collateral ligament
oblique popliteal ligament
arcuate popliteal ligament
lateral genual collateral ligament
patellar ligment
what are the intracapsular ligaments or intrinsic ligaments anteriorly? posteriorly
anterior cruciate ligament (ACL)
poster cruciate ligament (PCL)
transverse genual ligament
ACL
PCL
Posterior meniscofemoral ligament/ ligament of Wrisburg
Anterior meniscofemoral ligament/ ligament of humphry
what is the muscle associated with the knee joint?
origin
attachments
popliteus m
intracapsular to extracapsular as it passes distal to the medial edge of the arcuate popliteal ligament
posterolateral edge of the lateral meniscus
what comprises the menisci of the knee joint?
medial meniscus -anterior horn of the medial meniscus -posterior horn of the medial meniscus lateral meniscus -anterior horn of the lateral meniscus -posterior horn of the lateral meniscus
this structure of the knee joint is very extensive, its the synovial cavity of the knee, and largest in the body?
synovial membrane
what are the components of the synovial membrane?
femur menisci patella -infrapatella fat pad --alar folds --infrapatellar folds tibia -anterior intercondylar sulcus -posteior intercondylar sulcus
there are many of these associated with the knee joint and these are more common ones
allows for free movement of the structures that are separated?
bursae of the knee
