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Anatomy > Knee joint > Flashcards

Knee joint Flashcards

1
Q

The knee joint is described as a modified what?

A

Modified hinge joint

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2
Q

what are the three separate articulations of the knee joint ?

A

Femoropatellar

Femorotibial (x2)

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3
Q

Does the fibula articulate with the knee joint?

A

NO

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4
Q

Capsule attachments anteriorly

A

fuses with quadriceps tendon, patella and ligamentum patellae

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5
Q

Capsule attachment posteriorly

A

encloses intercodylar fossa of femur, open posterior to lateral condyle of tibia for popliteus m.

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6
Q

Extracapsular ligaments

A

Oblique Popliteal
Arcuate Popliteal
Medial and lateral collateral

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7
Q

Intracapsular ligaments

A

Anterior and posterior cruciate

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8
Q

Oblique popliteal ligament

A

Expansion of semimembranosus tendon

Reinforces posterior capsule

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9
Q

Arcuate ligament

A

Thickening of capsule over popliteus

Strengthens posterolateral joint capsule

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10
Q

Medial (Tibial) collateral ligament

A

strong flat thickening of capsule

Medial epicondyle of femur > medial condyle and superior medial surface of tibia

Deep fibres attach to medial meniscus

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11
Q

Lateral (fibular) collateral ligament

A

strong and cord- like

Lateral epicondyle of femur> lateral head of fibula

Tendon of popliteus: deep

Tendon of biceps femoris: split in two

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12
Q

Cruciate Ligaments function

A

Maintain contact between femoral and tibial articular surfaces when knee flexed

Wind around each other during medial rotation of the tibia
> limited to 10 degrees

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13
Q

Posterior cruciate ligament purpose

A

prevents the femur from sliding anteriorly on the tibia, particularly when the knee is flexed

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14
Q

Anterior cruciate ligament purpose

A

prevents the femur from sliding posteriorly on the tibia, preventing hyperextension of the knee, and limits medial rotation of the femur when the foot is planted (leg is fixed)

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15
Q

ACL attachment

A

Anterior intercondylar area of tibia

→ Medial side of Lateral condyle of femur

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16
Q

ACL spirals through how many degrees between tibia and fibula

A

110

17
Q

What does the anteromedial band of the ACL do ?

A

Limits flexion

18
Q

What does the posterolateral band of the ACL do ?

A

Limits extension

19
Q

PCL attachment

A

Posterior intercondylar area of tibia
→ Lateral side of Medial condyle of femur

closely aligned to centre of rotation of knee

20
Q

What does the anteromedial band of the PCL do ?

A

Limits flexion

21
Q

What does the posterolateral band of the ACL do ?

A

Limits extension

22
Q

What is the menisci ?

A

Wedges of fibrocartilage which deepen articular surface and act as shock absorption

23
Q

Medial meniscus

A

c- shaped
broad posteriorly
Firmly attached to TCL

24
Q

Lateral Meniscus

A

circular
freely moveable
attachment for popliteus

Anatomy (14 decks)

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