Foot and Ankle Flashcards

1
Q

Ottawa Ankle Rules

A
  • Pain in malleolar zone AND
  • bone pain in post edge of med or lat malleolus AND/OR
  • can’t bear weight immediately and in clinic
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2
Q

Ottawa Foot Rules

A

-Pain in midfoot zone AND
-Bone pain in base of 5th MT or navicular
AND/OR
-can’t bear wt immediately/in clinic

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3
Q

Ankle standard views (4)

A
  • AP
  • AP Oblique (Mortise)
  • Lateral
  • Oblique
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4
Q

Foot Standard views (3)

A
  • AP
  • Oblique
  • Lateral
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5
Q

AP Ankle View

A
  • Good for: distal tib/fib, malleoli

- Notice: lateral tib superimposed over fib, parallel talar dome and distal tib

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6
Q

AP Mortise View

A
  • shank internally rotated ~15-20
  • Mortise width 3-4mm
  • can see angulations or translations of talus in mortise (lig injury)
  • minimal superimposition of lateral tib and fib
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7
Q

Lateral View Ankle

A
  • done in neutral

- Good far: anterior/posterior tibia, position of midfoot and hindfoot

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8
Q

Oblique Ankle View

A
  • Shank IR ~45

- Good for: distal fib, lateral malleolus, distal tib/fib jt, talofibular jt

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9
Q

AP Foot

A
  • Can be WB or NWB
  • Good for: phalages, MTs, midfoot, 1st MT angle, Hallux valgus angle, Chopart (calcaneocuboid and talonavicular) joint, Lisfranc (tarsometatarsal)
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10
Q

Hallux Valgus

A
  • use WB AP view

- Mild: IMA 15, HVA >40

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11
Q

Oblique Foot

A
  • NWB
  • Lateral foot lifted ~45
  • Less superimposation of tarsals/metatarsals
  • First and second cuneiform are superimposed
  • look for plantar curving of MT heads
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12
Q

Lateral Foot

A
  • WB for long. arch measures
  • NWB for trauma
  • usu in neutral
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13
Q

Boehler angle (calcaneal fx)

A
  • line joining midbump to front bump
  • line joining midbump to back bump
  • Normal 25-40
  • lesser angle = fx
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14
Q

Calcaneal Inclination

A
  • line along plantar foot
  • line tangential to inferior surface of calcaneus
  • normal 20-30
  • higher values = pes cavus
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15
Q

Tarsometatarsal angle

A
  • line bisecting talus
  • line bisecting 1st MT
  • normal 0-10
  • increased angle = flat foot (talus plantarflexes)
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16
Q

Inversion/Eversion Stress view

A

Look for excessive tilting of talus in mortise

>10 = unstable

17
Q

Unimalleolar fx

A

Either lateral or medial

18
Q

Bimalleolar fx

A

-both med and lat

19
Q

Trimalleolar fx

A

Medial, Lateral, and posterior tibial rim

20
Q

Talar fx

A
  • second most fx bone (1st = calcaneus)
  • neck fx most common
  • high incidence of AVN, subtalar/ankle DJD
21
Q

Adult aquired flatfoor

A
  • most common women 45-65, diabetes, sero-neg arthropathies, overweight/smoking?
  • most commonly involves PTT dysfunction/rupture
  • lack supination at TSt, PSw
  • loss of dynamic control of medial long. arch
  • prolonged excessive uncontrolled pronation eventually stresses static stabilizers
  • too many toes
22
Q

Arthrodesis

A
  • Joint fusion
  • Done for: correcting hyperpronation/painful flexible flatfoot, severe subtalar DJD, trauma
  • can be talonavicular, calcaneocuboid, subtalar
23
Q

Stress Fx

A

look for hotspot on bone scan

24
Q

Stages of Adult Aquired Flatfoot

A
  • Stage I: painful synovitis of PTT, tendon length/function maintained
  • Stage II: weakens/tendon lengthens, flexible flatfoot
  • Stage III: rigid foot
  • Stage IV: tibiotalar valgus, arthritic changes