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701 anatomy > popliteal region and knee joint > Flashcards

popliteal region and knee joint Flashcards

1
Q

deep fascia also known as

A

fascia lata

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2
Q

deep fascia of the leg

A

crural fascia

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3
Q

lesser saphenous vein drains to

A

popliteal vein

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4
Q

popliteus

A

O: lateral condyle of femur, lateral meniscus
I: Proximal posterior tibia
Inn: tibial nerve
Blood: Popliteal artery
Action: unlocks extended knee (rotates femur laterally when tibia is fixed, tibia rotates medially when its not fixed)

fibers attach to the lateral meniscus and retract it posterior during knee flexion

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5
Q

popliteus in close chain femur moves?
popliteus in open chain femur moves?

A

femur rotates lateral
femur rotates medial

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6
Q

what provides collateral circulation to the knee joint?

A

Genicular branches of the popliteal artery

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7
Q

name the genicular branches

A

lateral superior genicular artery
medial superior genicular artery
middle genicular artery
lateral inferior genicular artery
medial inferior genicular artery

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8
Q

middle genicular pierces joint capsules and supplies to

A

ACL , posterior joint capsule and part of ACL

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9
Q

what supplies to the ACL

A

lateral/Medial Inferior genicular artery
middle genicular artery

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10
Q

patella is a sesamoid bone

A

develops in tendon of quadriceps

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11
Q

intercondylar eminence

A

attachment of cruciate lig ACL/PCL

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12
Q

top of patella is

A

base

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13
Q

bottom of patella is

A

apex

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14
Q

femorotibial joint is known as

A

true joint

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15
Q

patella sits on the

A

trochlear groove

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16
Q

joint space is where

A

the patella glides

17
Q

extrinsic ligaments

A

anterior
medial and lateral
posterior

18
Q

anterior extrinsic ligaments

A

patellar ligament
patellar reinaculum (medial and lateral)

19
Q

medial and lateral extrinsic ligaments

A

MCL - tibial
LCL - fibular

20
Q

posterior extrinsic ligaments

A

oblique popliteal ligament
arcuate popliteal ligament

21
Q

to see LCL with muscles do you have to remove

A

bicep femoris and IT

22
Q

medial collateral ligament

A

strong, flat
medial epicondyle (femur) to medial condyle (tibia)
anchored to medial meniscus

23
Q

lateral collateral ligament

A

rounded, cordlike
lateral epicondyle (femur) to fibular head
not anchored to lateral meniscus

24
Q

anterior cuciate laigament

A

ACL
anterior tibial plate to medial side of lateral candy of the femur

25
Q

posterior cruciate ligament

A

PCL
posterior tibial plateau to lateral side of medial condyle of femur

26
Q

cruciate ligaments limits?
and what does it provide?

A

rotation of knee
provide stability

27
Q

unhappy triad

A

three structures being sprained - ACL, medial meniscus, MCL

28
Q

ACL repair

A

double bundle reconstruction - 4 bony
tunnels with 2 graft

29
Q

menisci of the knee

A

act as shock absorption

30
Q

medial meniscus

A

c shaped
well anchored on tibia
attached to medial collateral ligament

31
Q

lateral meniscus

A

less likely to tear
more of a complete ring
not well anchored (can get probe under this structure)
more mobile during flexion/extension

32
Q

ACL is10x more likely to tear? true or false

A

true

33
Q

how do you get a tear?

A

knee flexion with knee valgus with extreme IR or ER

34
Q

mechanism of medical tears

A

sudden extension or rotational movements when the knee is fixed in flexion

35
Q

genu valgum - kock knees

A

MCL limits values force

36
Q

genu varum - bow legged

A

LCL limits varus force

37
Q

what goes around the ACL and PCL

A

synovial membrane

38
Q

muscles involved in IR

A

semimembranosus
semitendinosus
gracilis
sartorius
popliteus

39
Q

muscles involved in ER

A

biceps femoris long head
bicep femoris short head

701 anatomy (18 decks)

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