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OPTIM OCS: LQ > Knee: Anatomy 2 > Flashcards

Knee: Anatomy 2 Flashcards

1
Q

ACL/PCL blood supply

A

genicular artery

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2
Q

ACL/PCL are innervated by branches of this nerve

A

tibial nerve

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3
Q

ACL/PCL: 3 types of mechanoreceptors

A
  • Ruffini corpuscles
  • Pacinian corpuscles
  • Golgi tendon organs
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4
Q

ACL originates from the posteromedial corner of the (medial/lateral) side of the (medial/lateral) condyle

A

medial side

lateral condyle

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5
Q

ACL inserts where?

A

anteromedial to intercondylar eminence of tibia

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6
Q

ACL: anterior/medial bundle

larger/smaller

A

smaller

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7
Q

ACL: anterior/medial bundle

taut in this position

A

throughout flex (and IR)

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8
Q

ACL: anterior/medial bundle

position tested in

A

flexion

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9
Q

ACL: posterolateral bundle

larger/smaller

A

larger/bulkier

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10
Q

ACL: posterolateral bundle

taut in this position

A

extension

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11
Q

ACL: posterolateral bundle

tested in this position

A

0-20˚ flexion

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12
Q

ACL bundles are named based on

A

attachments to TIBIA

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13
Q

ACL provides (%) resistance to anterior translation of the tibia on the femur at 30˚ and slightly less at 90˚

A

85%

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14
Q

PCL: originates from (lateral/medial) aspect of (lateral/medial) femoral condyle

A

lateral aspect

medial femoral condyle

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15
Q

PCL: inserts where

A

fossa posterior to tibial tubercle

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16
Q

PCL: (%) anterolateral bundle

A

95%

17
Q

PCL: (%) posteromedial bundle

A

5%

18
Q

PCL: anterolateral bundle is taut in this position

A

flexion

19
Q

PCL: posteromedial bundle taut in this position

A

extension

20
Q

PCL is the primary restraint to

A

posterior displacement of tibia on femur

21
Q

PCL: common MOI

A

hyperflexion

dashboard injury

22
Q

LCL attachment points

A
  • lateral femoral epicondyle

- fibular head (with biceps femoris)

23
Q

LCL is the primary restraint to

A

varus stress

24
Q

In addition to being the primary restraint to varus stress, the LCL also limits

A

excessive tibial ER

25
Q

LCL is (intra/extra)capsular

A

extracapsular

26
Q

MCL: attachment sites

A
  • posterior aspect ot medial femoral condyle

- pes anserine

27
Q

MCL: superficial and deep portions are separated by

A

bursa

28
Q

MCL: superficial and deep portions are separated by bursa which allows for

A

motion with flexed positions

29
Q

MCL: primary restraint to

A

valgus stress

30
Q

MCL: deep portions attach to

A
  • meniscus
  • semimembranosus
  • vastus medialis
31
Q

MCL: (rich/poor) blood supply

A

rich - allows for good healing

32
Q

patellofemoral joint: articulating surfaces

A
  • medial/lateral (and odd) facets

- articulates with trochlear groove of femur

33
Q

patellofemoral joint: only this aspect is in contact with the femur in knee extension

A

only the inferior pole (loose)

34
Q

patellofemoral joint: contact area increases with (flex/ext)

A

flexion

35
Q

patellofemoral joint: contact area increases with flexion until beyond

A

90˚

OPTIM OCS: LQ (43 decks)

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