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PTRS 711 Exam 2 > Knee Joint > Flashcards

Knee Joint Flashcards

1
Q

Genu Varum

A

Bow legged
Foot alignment
Tibial alignment

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2
Q

Genu Valgum

A 
Knock-kneed
Foot or hip alignment
Muscle imbalance
High BMI
Ligament laxity
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3
Q

Genu Recurvatum

A

Hyperextension of knee>10
Bad postural control
Neuro imbalance
Fixed PF

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4
Q

Pronation Closed Chain

A 
Calcaneal eversion
Talar PF and adduction
Tibial IR
Knee flexion
Femorial IR
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5
Q

Supination Closed Chain

A 
Calcaneal inversion
Talar DF and abduction
Tibial ER
Knee extension
Femoral ER
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6
Q

Screw home mechanism driven by

A

Shape of medial femoral condyle
Passive tension of ACL
Lateral pull of quads

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7
Q

Arthrokinematics

A

Tibial plateau is concave and femoral condyles are convex

Roll and glide in same direction

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8
Q

MCL

A

Resists valgus and extension forces

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9
Q

MCL MOI

A

Excessive valgus w/ foot planted

Severe hyperextension

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10
Q

LCL

A

Resists varus and extension

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11
Q

LCL MOI

A

Excessive varus w/ foot planted
Severe hyperextension
ACL

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12
Q

ACL

A

Stability
NWB - prevents excessive anterior translation of tibia
WB - prevents excessive posterior translation of femur

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13
Q

ACL MOI

A 
Non-contact usually
Hyperextension
Values with foot planted
Decelerating
Cutting
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14
Q

PCL

A

Thicker than ACL
NWB - prevents excessive posterior translation of tibia
WB - prevents excessive anterior translation of femur

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15
Q

PCL MOI

A

Falling on flexed knee

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16
Q

Medial Meniscus

A

C-shaped
Attached to MCL/capsule
Excursion of 6 mm

17
Q

Lateral Meniscus

A

O-shaped
Attached to capsule
Excursion of 12 mm

18
Q

Meniscus

A

Shock absorption
Stabilization
Lubricate articular cartilage

19
Q

Meniscus MOI

A

Forceful compression and axial rotation

20
Q

Patellofemoral Joint

A

Protects tibiofemoral joint

Improves MA of quads

21
Q

Q Angle

A

ASIS -> Midpoint of patella -> tibial tuberosity

Normal is 10-15 degrees

22
Q

Joint compression forces

A

Higher with greater quad force and degree of knee flexion

PTRS 711 Exam 2 (4 decks)

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