More On Foot Amputations Flashcards

1
Q

Lisfranc joints

A

Disarticulated at tarsal/metatarsal joint

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2
Q

Chopart amputations

A

Disarticulation at

  • talonavicular
  • calcaneocuboid
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3
Q

This amputation maintains heel pad

A

Syme’s

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4
Q

Who is most likely to get a partial foot amputation?

A

usu result from vascular problems with elderly people

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5
Q

Shoes used to protect remaining tissue (partial foot amputation)

A

BEST

  • neuropathic walker boot
  • AFO

ADEQUATE

  • shoe insert with extra depth
  • post-op shoe
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6
Q

What happen if the forefoot rocker is lost?

A
  • decreased velocity
  • increased energy cost
  • increased vertical forces
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7
Q

What type of contracture do partial foot amputees often get? What does this result in?

A
  • PF

- Results in plantar pressure and pain (esp at 1st and 5th met heads, navicular, malleoli, and tibial crest)

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8
Q

What often accompanies a toe filler with partial amputations?

A

Extended heel shank

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9
Q

Aside from custom orthotics and toe fillers, what else may be used to help restore anterior support and controlled fulcrum for forward motion?

A
  • UCBL orthotics (controls foot motion better than shoe alone)
  • cosmetic slippers
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10
Q

Risks associated with digit/partial ray amputation

A
  • excessive pronation

- increased pressure on remaining rays

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11
Q

Risks associated with ray/multiple ray amputation

A
  • multiple central ray amputations don’t function well due to increased pressure on borders
  • get generally increased pressure to remaining surface area
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12
Q

Risks associated with transmetatarsal amputation

A
  • increased pressure
  • not particularly successful
  • should be limited to intact vasculature
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13
Q

Risks associated with Lisfranc and Chopart amputations

A
  • increased pressure
  • equinus and varus deformities
  • skin breakdown
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14
Q

Why does the pt get an equinus and varus deformity?

A
  • pull of PF

- loss of DF and peroneal muscles

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15
Q

Prevalence of Chopart and Lisfranc amputations

A

Not typically done

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16
Q

Risks associated with Symes amputation

A
  • poor cosmetics (cankles)

- not much room to attach foot

17
Q

Risks associated with hip disarticulation and hemipelvectomy

A
  • scoliosis
  • need good abdominals with hip disarticulation
  • slow ambulation (requires 200% more energy)
18
Q

Risks associated with hemipelvectomy (women)

A

Pregnancy issues

  • socket is suspended from iliac crests
  • torque absorbers can be good
19
Q

Hip disarticulations and hemipelvectomies are usually done for this

A

Cancers

20
Q

General prosthesis for great toe amputation

A

Foot plate

21
Q

Prosthesis for amputation of lesser toes

A

Shoe filler

22
Q

When would arch support be needed with toe amputation?

A

Partial ray

23
Q

Digit/partial ray: sole

A

May have a steel shank

24
Q

General prosthesis: ray/multiple ray

A
  • shoe filler

- well fit shoe, maybe with steel shank

25
Q

General prosthesis: Lisfranc, Chopart amputations

A
  • shoe fillers

- metal shank + rocker sole

26
Q

What must be done if the pt gets a rocker sole on the amputation side?

A

Other shoe needs a lift 2˚ to rocker side

27
Q

Foot position with Symes

A
  • usu locked

- possibly in slight DF to improve rollover

28
Q

Type of foot used with Symes?

A
  • SACH is fine

- there are dynamic response feet available

29
Q

Socket concern with Symes amputation

A
  • variable approaches to socket (e.g. Windows)

- 2˚ to flared distal end around malleoli

30
Q

Hemipelvectomy and hip disarticulation: socket

A

Need flexible sitting socket to be level

31
Q

Hemipelvectomy and hip disarticulation: hip joint

A
  • anterior set to bias toward hip extension

- free motion hip with external stop

32
Q

Why would the hip joint need to be biased to extension for a hemipelvectomy or hip disarticulation?

A

Stability

33
Q

Leg/knee prosthesis for hemipelvectomy and hip disarticulation (swing phase)

A
  • shorter leg to assist swing

- need swing assist knee

34
Q

Hemipelvectomy and hip disarticulation: foot choice

A

Often use a SACH foot

35
Q

hemipelvectomy prognosis

A

Don’t expect to get good gait pattern