knee anatomy review Flashcards

1
Q

what are the three joints of the knee region

A

tibiofemoral

patella-femoral

proximal tibiofibular

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2
Q

what is larger on the patella the medial or the lateral facet

A

the lateral facet

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3
Q

what kind of joint is the tibiofemoral joint

A

a bicondaylar synovial joint

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4
Q

what movement do we see at the tibiofemoral joint

A

flex/ext

ER/IR

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5
Q

what is a open pack position for the tibiofemoral joint

A

30 flex

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6
Q

what is the closed pack position for the tibfemoral joint

A

full ext

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7
Q

what is the capsular pattern for the knee

A

flex > ext

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8
Q

is some valgum at the knee normal

A

yes

0-15

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9
Q

with valgum is the knee going in or out

A

the knee is going in

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10
Q

with varum is the knee going in or out

A

out
bowed leg

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11
Q

open chain kinematics of the knee

A

same direction

tibia moving on the femur

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12
Q

extension kinematics - open

A

anterior roll

anterior glide

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13
Q

flexion kinematics - open

A

posterior roll

posterior glide

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14
Q

closed chain kinematics

A

opposite direction

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15
Q

when does the screw home mechanism occur

A

moving from flexion to ext

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16
Q

what is happening in the screw home mechanism

A

10-15 deg of lateral tibia rot in non-WB (ER)

10-15 of medial femoral rots in WB

17
Q

what muscle unlocks the knee from full extention

18
Q

what kind of joint is the patella-femoral joint

A

modified plane joint

19
Q

where does the patella sit

A

in the trochlear groove of the femur

20
Q

what is the function of the patella femoral joint

A

to protect the front of the knee and to provide the mechanical advantage for the quad muscle

21
Q

what direction does the patella glide with flexion

A

inf

with flexion the patella comes in more contact

22
Q

what muslce stablizes the patella on all side

A

the quad tendon

23
Q

what is the purpose of the meniscus

A

deepens the joint surface and increases the congruency and contact area

absorbs shock

distributes WB load

provides stability and lubrication

24
Q

is the MCL attached the men

A

yes the medial men

terrible tirad

25
with a men tear what happens to the shock absorption
shock absrobtion decreases
26
what part of the men is vascularized
the outside, there is less blood supply as we go more medial
27
what makes up the hamstring
semitendinous, semi-membranous, and biceps femoris
28
what attaches the two men anterior
the transverse ligament
29
what direction does the men glide with flex
post
30
what direction does the men glide with ext
inf
31
where does the the joint capsule run from
the femoral condyles to the below the men
32
the cruciate ligaments joint capsule
in the fibrous joint capsule but not in the synovial capsule
33
what is the plica
synovial membrane that is folded over often not a problem
34
patella tendon and the patella
helps to maintain the alignment of the patella
35
the medial collateral ligament blends with what
med men
36
what the MCL resist
valgus stress lateral tib rot medial femoral rot
37
is the LCL attached to any other structures
no not to capsule or men
38
what does the LCL resist
varus stress lateral tib rot medial femoral rot
39
ACL attches where on the tib
anterior on the tib