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MSK basics > knee 1 - anatomy > Flashcards

knee 1 - anatomy Flashcards

(72 cards)

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1
Q

what are three joint of the knee

A

proximal tib-fib

patellofemoral

tibiofemoral

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2
Q

what kind of joint is the tibiofemoral joint

A

bicondylar

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3
Q

what movement is allowed at the tibiofemoral joint

A

flex/ext

IR and ER

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4
Q

what is the OPP for the tibiofemoral joint

A

30-deg flexion

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5
Q

what is the CPP for the tibiofemoral joint

A

full extension

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6
Q

what is the capsular pattern of the tibiofemoral joint

A

flex > ext

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7
Q

is some valgum normal in the knee

A

yes

normal os 10-15

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8
Q

what part of the knee is closing down when the knee is in valgum

A

the lateral outside portion of the knee

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9
Q

Is some hypere ext okay in the knee

A

yes

if it aint broke do not fix it

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10
Q

what are the arthokinematics for the tibiofemoral joint - open chain

A

concave on conves

same direction

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11
Q

what is the screw home mechanism

A

10 -15 deg of lateral tib rot

10 - 15 deg of medial tib rot

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12
Q

what unlocks the knee from full extension

A

the popliteus

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13
Q

what direction does the tibia rotate in the screw home mechanism

A

ER of the tibia is used to lock the knee

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14
Q

what kind of jointis the patellafemoral

A

a modified plane joint

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15
Q

what part of the femur does the patella sit in

A

the trochlear groove

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16
Q

what is the function of the patella femoral joint

A

protects the ant knee

increases the the mechnical advantage of the quads

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17
Q

what direction does the patella glide with flexion

A

inf

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18
Q

what direction does the patella glides with ext

A

sup

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19
Q

what muscle glides the motion of the patella in regards to the femur

A

the quads

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20
Q

what anchors the patella tendon distally

A

the patella tendon

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21
Q

what muscle contributes to the lateral pull of the patella

A

the IT band

vastus lateralis

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22
Q

what muscle contributes to the patella on the medial side

A

the vastus medialis

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23
Q

what kind of joint is the proximal tib fib joint

A

a modified plane joint

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24
Q

what is the major movement we see at the proximal tib fib joint

A

mostly gliding motion

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25
what is the function of the men
the deepen the joint surface and to increase contact area of the knee stability distribute weightbearing absorb shock
26
what is a meniscoectomy
the partial surgical removal of the men
27
does the men have good vascularization
no only okay vascularization on the outside portions
28
what muscles attach to the post medial men
semimembranosous and
29
what ligament attaches medial and lateral men
transverse ligament
30
what muscle sends fibers into the lateral meniscus
the popliteus
31
what direction does the men glide with flexion
ant
32
what direction does the men glides with ext
post
33
what is the primary resistance of the MCL
valgus stress
34
what movement does the LCL and the MCL both restrict
lateral tibia medial femoral
35
what is the primary resiatnce of the LCL
varus stress
36
where does the ACL attached on the tibia
anterior
37
where does the PCL attached on the tibia
posterior portion
38
what part of the capsule are the ACL and the PCL
extra synovial intra capsular
38
what is the function of the ACL
prevent ant tibia translation
39
what is the function of the PCL
resists posterior tib translation primary stabilizer of the knee
40
what ligament prevent interal rot/medial of the tibia
ACL and PCL
41
what are the extensors of the knee
quads - VM, VL, VI, RF
42
what are the flexors of the knee
hamstring gastroc popliteus sartorius and gracilis
43
where does sartorius and gracillis attach
the pes anserine SGT
44
what are the ER of the knee
lateral hamstring ITband
45
what are the internal rotators of the knee
Pes anserine - SGT popliteus medial hamstring
46
what are the three muscles of the hamstring
BF semiten semimem
47
where do all of the hamstring muscles attach to
the Ischial tuberosity
48
where is the pes anserine
medial knee below the joint line
49
where does the bicep femoris insert
the fibular head
50
what is the origin of the RF
the AIIS
51
what is the origin of the vastis lat
greater trochanter
52
what is the origin of the vastus med
linea aspera of the femur
53
what vasculature is found in the popliteal fossa
popliteal art and vien tibia nerve posterior femoral cutaneous nerve common peroneal nerve
54
what is the popliteal art a branch of
the femoral art
55
what does capsular pattern mean
the issue is not in the patient joint capsule and is instead likely the ligaments of the tendons
56
knee artho extension
anterior roll and glide
57
knee artho flexion
posterior roll and glide
58
why does the screw home mechanism occur
becasue the medial condyle is longer then the lateral so the lateral is done but the medial is not creating this rotation
59
what is the importance of the proximal tib fin joint with ankle issues
ant glide seen with ankle eversion post glide seen with ankle inversion this joint can become hypomobile and cause lateral knee pain following ankle sprains - it is stiff and not moving well
60
what bursa do we see in the knee
prepatellar bursa suprapatellar bursa infrapatellar bursa pes anserine bursa
61
what is the function of bursa
cushion for the knee or provide lubrication for structures
62
can you stretch the IT band
no it is fascia
63
what are the two joint muscles in the knees
rec fem gastroc
64
what combine movement causes valgus collapse
hip ADD Hip IR knee ER Knee abd
65
what does valgus collaspe result in
greater lateral tension on the patella
66
wha is knee injury is valgus collaspe predictive of
PFPS
67
what does a compensated trendelenburg do to the knee
the creates an external knee valgus moment
68
what is a compensated trendelenburg
when someone with a tren performs a hip hike to prevent hip drop
69
what muscles can contribute to valgus collapse
weak hip abd/ER decreased or delayed actiativation of the VMO
70
can you selectivly strengthen the VMO
no the quads always activate together
71
what factor can lead to altered patella loading
limited patella mobility lateral fibers tight

MSK basics (20 decks)

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