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Flashcards in CMP Knees Deck (6)
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1
Q

Constant friction (single axis)

A

Gen. Indications: single speed walking on level surfaces, only if hip control is good or better
Adv: simple, inexpensive, reliable
Disa: fixed cadence, low stability

2
Q

Stance control (safety)

A

Gen. Indications: initial px, general debility poor hip control
Adv: improved knee stability
Dis: delayed swing phase—must unload fully to flex and sit

3
Q

Polycentric

A

Positive stability, sitting cosmetics
General indications: initial px.; general debility, poor hip control; knee disarticulation or long TF
Adv: excellent knee stability, cosmetics for long amputations
Dis: adds weight and cost, not heavy duty

4
Q

Manual locking

A

Indication: last resort
Advan: ultimate knee stability
Dis: abnormal gait, awkward sitting

5
Q

Fluid controlled: pneumatic, hydraulic

A

Gen. Indications: able to vary walking speed
Adv: variable cadence; smoothest, most natural gait, sophisticated stability??
Dis: greater weight, cost, maintenance

6
Q

Hybrid

A

General ind: for combined functions from two or more classes
Adv: one knee allows multiple functions
Dis: greatest cost and complexity