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LEA > lec 10 knee joint > Flashcards

lec 10 knee joint Flashcards

1
Q

what type of joint is knee joint

A

synovial hinge joint

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2
Q

complexity of knee joint

A

composite

menisci and 3 articulating surfaces

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3
Q

how many condyles in knee joint

A

2 pairs

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4
Q

motion of knee joint

A

uniaxial joint

around transverser axis in sagittal plane

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5
Q

movement of knee joint

A

flexion extension

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6
Q

When can small amounts of passive abduction and adduction occur in the knee joint?

A

during flexion

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7
Q

what is conjunct

A

joined or united

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8
Q

what is adjunct

A

joined or added but not an essential part

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9
Q

When does conjunct medial femoral rotation occur?

A

During the last 30 degrees of extension (from flexion) and corresponding lateral femoral rotation

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10
Q

In which position is the knee strongest osteologically?

A

extension

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11
Q

Where are the menisci avascular and vascular?

A

Avascular centrally, but vascular peripherally

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12
Q

How do the menisci attach to the tibia?

A

Via fibers of the capsule called the coronary ligament

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13
Q

what do menisci do

A

improve bony articulation between femoral condyles and tibial condyles

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14
Q

how are menisci attached to tibia

A

loosely via fibers of capsule called coronary ligament

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15
Q

what are the extrascapular ligaments

A

tibial collateral

fibular collateral

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16
Q

Does the lateral collateral ligament have any lateral attachments to the meniscus?

A

no

17
Q

Does the medial collateral ligament have any attachments to the meniscus

A

yes

18
Q

when are the TCL & FCL tensed

A

in extension

contribute to knee joint stability

19
Q

What are the intracapsular cruciate ligaments?

A

ACL
PCL
Transverse genicular

20
Q

What is the mnemonic for the directions the ACL and PCL run?

A

APEX

PAIN

21
Q

Which of the cruciate ligaments has the better blood supply?

A

PCL

22
Q

Which of the cruciate ligaments is tensed in extension?

A

ACL

23
Q

Which of the cruciate ligaments is tensed in flexion?

A

PCL

24
Q

What contribute to the unhappy triad?

A

ACL, MCL, and MM

25
Q

Are the ACL and PCL intra or extrasynovial

A

Extrasynovial (but intracapsular)

26
Q

ACL limits what

A

medial rotation of femur when foot is fixed and knee is flexed

27
Q

What are the major bursa at the knee?

A

Subcutaneous prepatellar
Subcutaneous infrapatellar
Subtendinous infrapatellar
Suprapatellar

28
Q

What is the innervation at the knee?

A

Articular branches of femoral nerve, posterior division of obturator, tibial and common fibular (peroneal) nerves

29
Q

What arteries anastomose around the knee?

A

Femoral (4th perforating branch)
Popliteal
Posterior tibial

30
Q

What is the name of the portion of the MCL that attached to meniscus?

A

posterior oblique ligament

LEA (12 decks)

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