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Muscles > Joints, Ligaments & Muscles of Knee > Flashcards

Joints, Ligaments & Muscles of Knee Flashcards

0
Q

Patellofemoral joint open and closed pack

A

O: Full knee extension
C: Full knee flexion

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1
Q

Tibiofemoral joint open & closed pack

A

Open: 25 degrees
Closed: full extension and lateral rotation of tibia

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2
Q

Patella increases mechanical advantage of quads by:

A

Increases quads moment arm

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3
Q

> 5 degrees of knee hyperextension is known as

A

Genu recurvatum

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4
Q

Screw home mechanism open and closed chain description

A

Open: ER of tibia on femur at end range knee extension
Closed: IR of femoral surface on tibia at end range knee extension

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5
Q

Normal Q angle is _____ and formed by:

A

13 - 19 degrees

Measured by ASIS line to middle of patella and middle patella to tib tub

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6
Q

Is a condition in which the tib tub bc more pronounced at an older age

A

Osgoodslaughter

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7
Q

This ligament prevents tibia moving fwd and femur from moving bkwd

A

Anterior cruciate ligament

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8
Q

This ligament prevents tibia moving bkwd and femur moving fwd

A

posterior cruciate ligament

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9
Q

This knee ligament is more commonly injured

A

ACL more commonly injured, usually more commonly injured in females, usually noncontact injury - cutting, land flat on heels

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10
Q

This force stresses the MCL

A

Valgus

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11
Q

This force places stress on the LCL

A

Varus

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12
Q

LCL attaches to

A

lateral condyle of femur and fibular head

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13
Q

This meniscus is torn more frequently

A

Medial

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14
Q

How many bursae att knee

A

13

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15
Q

These three muscles attach to Pes Anserine

A

Sartorius, Gracilis, Semi-tendinosus

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16
Q

These two tendons are frequently used for autographs to repair ACL

A

Semitendinosus and Gracilis

17
Q

N & NR Rectus Femoris

A

Femoral Nerve; L2, L3, L4

18
Q

O, N & NR for Vastus Lateralis

A

O: Linea Aspera
N: Femoral Nerve
NR: L2, L3, L4

19
Q

This muscle fires most at end range knee extension

A

Vastus Medialis

20
Q

O, N & NR Vastus Medialis

A

O: Linear Aspera
N: Femoral Nerve
NR: L2, L3, L4

21
Q

O, N, NR of Vastus Intermedialis

A

O: Anterior femur
N: Femoral nerve
NR: L2, L3, L4

22
Q

I, N, NR of Semi-membranosus

A

I: Posterior surface of medial condyle of tibia
N: Sciatic Nerve
NR: L5, S1, S2

23
Q

N & NR of Semitendinosus

A

N: Sciatic Nerve
NR: L5, S1, S2

24
Q

O, N & NR of short head Biceps Femoris

A

O: Lateral lip of linea aspera
N: Common Peroneal Nerve
NR: L5, S1, S2, S3

25
Q

N & NR of Biceps Femoris

A

N: Sciatic nerve
NR: L5, S1, S2, S3

26
Q

This muscle unlocks the knee

A

Popliteus

27
Q

The popliteus unlocks the knee how?

A

external rotation

28
Q

N, NR of Popliteus

A

N: Tibial Nerve
NR: L4, L5, S1

29
Q

O, I, A, of Popliteus

A

O: Lateral condyle of femur
I: Posterior medial condyle of tibia
A: initiates knee flexion

30
Q

This muscle can help hold knee in extension if pt does not have quad function

A

Gastrocnemius

31
Q

Muscle contributes to lateral stability

A

TFL

32
Q

These two muscles contribute to medial stability

A

Gracilis & Sartorius

33
Q

These two muscles provide posterior stability - both medially and laterally

A

Gastroc & Hamstrings

34
Q

Provides anterior stability to knee

A

Quads

35
Q

Knocking knees

A

Genu Valgum

36
Q

Genu varum

A

bowleged

37
Q

Terrible Triad

A

ACL, MCL, Medial Mensicus

38
Q

Pronounced tib-tub

A

Osgood-Schlatter disease

39
Q

Patellofemoral pain syndrome

A

happens in younger people; athletes: knee may give way unexpectedly: usually result of roughening, overuse,: felt when knee bent,

Muscles (56 decks)

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