7 (M) Knee Flashcards
Nerve that wraps around neck of fibula
Common fibular
Sciatic nerve branches
Tibial nerve
common fibular
Posterior thigh arterial supply
Deep femoral artery
Superiomedial border of the popliteal fossa
Semimembranosus + semitendinosus
Lateral border of the popliteal fossa
biceps femoris
inferiomedial border of the popliteal fossa
Medial + lateral heads of gastrocnemius
Roof of popliteal fossa
popliteal fascia
Floor of popliteal fossa
knee joint capsule, distal femur, proximal tibia, (popliteus muscle)
Which superficial vein drains into the popliteal vein
Small saphenous
What kind of joint is the knee?
Synovial hinge joint
Are the surfaces of the knee congruent
No => incongruent
What kind of bone is the patella?
Sesamoid bone
bipartite patella =
Patella is split into 2 bones instead of 1
Patella disclocation is more common in …
females > males
Which direction does the patella dislocate in?
Laterally
What 2 measures prevent patella disclocations?
Vastus medialis pulling patella medially
Lateral femoral condyle projecting anteriorly
In what movement is the knee most stable?
Why (2)
During extension
=> Most congruent
=> most stable
What ligaments + tissue are found to tear with eachother?
Medial meniscus + tibial collateral ligament => as they are bound together
Anterior + posterior cruciate ligaments attach to what area
Intercondylar area
Anterior cruciate ligament prevents ….
anterior displacement of tibia on femur
Posterior cruciate ligament prevents …
posterior displacement of tibia on femur
Which ligament stabilises the flexed knee when weight bearing –> walking down stairs
Posterior cruciate ligament
how are cruciate ligaments typically injured
Hyperextension w/rotation
What kind of rotation occurs when the knee is reaching full extension?
small degree of medial rotation
unlocking the knee is what type of rotation?
What causes it
Lateral rotation
Popliteus
Genicular arteries around the knee stem from what artery?
Popliteal
As the knee approaches full extension, the medial femoral condyle undergoes a few degrees of medial rotation on the tibia.
Is this statement true or false?
yes
If there is a normal response to the patella strike which of the following spinal segments are intact?
l2 - l4
PCL does what
It stabilises the flexed, weight-bearing knee
Thrombus in which vein would lead to a swollen red calf
Popliteal
