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Anatomy Lower extremity > knee > Flashcards

knee Flashcards

1
Q

what are the boundaries of the popliteal fossa?

A

Superomedial - semitendonosis/semimembranosus
superolateral - biceps femoris
inferomedial - medial gastroc.
inferlateral - lateral gastroc and plantaris
roof - popliteal fossa
floor - femur, oblique popliteal lig, popliteus muscle

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2
Q

what is the importance of the popliteus muscle?

A

it is important to move the knee from an extended position to a flexed one

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3
Q

what are the contents of the popliteal fossa?

A 
popliteal artery (genicular anastomoses and sural arteries. 
popliteal vein
tibial and common peroneal nerve 
small saphenous vein
popliteal bursa
lymph nodes 
posterior femoral cutaneous
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4
Q

what two nerves come off the tibial and common peroneal nerves?

A

the medial and lateral sural cutaneous

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5
Q

what happens to the medial and lateral sural cutaneous about 2/3 down the calf?

A

the join together to form the sural cutaneous

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6
Q

what is the medial and lateral sural cutaneous too?

A

to the medial and lateral aspect of the calf

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7
Q

the descending genicular comes off what artery>?

A

the femoral artery

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8
Q

the anterior tibial artery comes off what artery?

A

the tibial artery

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9
Q

what 5 genicular arteries come off popliteal artery for the knee?

A 
superior medial genicular 
inferior medial genicular 
superior lateral genicular 
inferior lateral genicular 
middle genicular
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10
Q

what are the three joint articulations of the knee?

A

patellofemoral, tibiofemoral, superior tibiofibular joint

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11
Q

what is the largest joint in the body?

A

tibiofemoral

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12
Q

what is the tibiofemoral joint suspected to injury?

A

because it is between 2 fixed bones

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13
Q

True or false: in the tibiofemoral joint the articulating surfaces are not congruent?

A

true

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14
Q

why are the articulating surfaces not congruent in the tibiofemoral joint?

A

because you cannot achieve stability through bony strucutres

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15
Q

what does the tibiofemoral joint rely on to aid in congruency/stability?

A

muscles, ligaments, and menisci

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16
Q

what is the differences between the medial and lateral condyle of the femur?

A

medial condyle: better developed with more mass

lateral condyle: has an angle that is associated with it

17
Q

where does the IT band insert to?

A

gerdys tubercle

18
Q

what is the pes anserone?

A

it is a point of insertion where it keeps muscles on the medial side of the knee taut

19
Q

what do the femoral condyles sit on and where are the tibial condyles located?

A

the femoral condyles sit on the tibia plateau and the tibial condyles are located just inferior to the plateau

Anatomy Lower extremity (5 decks)

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