Quiz 5: 2 Flashcards

1
Q

What is the bayonet sign?

A
  • Femur comes straight down
  • Patella is in IR
  • Proximal tibial external torsion
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2
Q

What is the camel sign?

A
  • second “hump” in knee

- due to large infrapatellar fat pad

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3
Q

What is the camel sign also known as if it’s symptomatic?

A

Hoffa’s syndrome

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4
Q

What are the components of miserable malalignment syndrome?

A
  • Femoral anteversion
  • Femoral IR
  • PF IR
  • Proximal tibial ER
  • Distal tibial varus
  • STJ pronation
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5
Q

There is ALWAYS this type of force vector present on the patella

A

Valgus

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6
Q

What is the tracking pattern of the patella on the R and L knees?

A
  • C on left
  • Reverse C on R

Patella swoops toward midline during knee extension and back out at full extension

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7
Q

Where does the plica insert?

A

Medial aspect of the infrapatellar fat pad

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8
Q

What is the plica?

A

Thickening of the medial retinaculum

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9
Q

What test can help implicate the plica?

A

Stutter test

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10
Q

What are the two classifications of patellar dislocations

A
  • LAACS

- TONES

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11
Q

LAACS group =

A

Laxity

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12
Q

LAACS:

L

A
  • Generalized Laxity

- Lower age at initial dislocation

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13
Q

LAACS:

AA

A
  • Atraumatic
  • Abnormal PF architecture
  • Abnormal ligamentous laxity
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14
Q

LAACS:

C

A
  • Chronic in nature

- Contralateral involvement

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15
Q

LAACS:

S

A
  • Sex dependent

- Greater # of females

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16
Q

TONES:

T

A

Traumatic, sports related MOI

17
Q

TONES:

O

A
  • Older at initial dislocation

- OCD fx more common

18
Q

TONES:

N

A
  • Normal PF architecture

- Normal alignment

19
Q

TONES:

E

A

Equal sex distribution

20
Q

TONES:

S

A
  • Single occurrence

- Single leg involvement

21
Q

What is the primary static stabilizer of the medial patella?

A

MPFL

22
Q

What is the gold standard proximal realignment surgery?

A

MPFL-R

23
Q

The MPFL makes up ___% of the medial restraint of the patella.

A

85-90%

24
Q

What does the articularis genu do?

A
  • Contracts and pulls the capsule superiorly during knee extension
  • So the capsule doesn’t get impinged by the patella
25
Q

What are the two most innervated structures of the knee?

A
  • Infrapatellar fat pad

- Synovium

26
Q

Name of the crazy man who did the surgery w/o anesthesia

A

Dr. Scott Dye

27
Q

Which muscles are weak with PF lesions?

A
  • Quads
  • HS
  • hip flexors

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