Overview of Prosthetic Knees
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Single axis (constant friction) | Simplicity | Single speed walking, only if hip control is "good" or better, or when duability is required | Inexpensive, durable | Fixed cadence, low stability
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Stance control (weight activated locking) | Increased weight-bearing stability | General weakness or infirmity; poor hip control | Improved knee stability | Delayed swing phase; must unload fully to flex or sit
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Polycentric | Positive stability and ease of flexion for swing phase; special design available that provides sitting cosmesis for long residual limbs | To enhance knee stability; special design availabe for knee disartic | Stable without disrupting swing phase; sitting cosmesis | Increased weight, maintenance, cost
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Manual lock | Knee of last resort | Ultimate knee stability | Eliminates knee flexion | Abnormal gait; awkward sitting
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Fluid-controlled | Permits cadence change; micro-processor control offers most normal gait pattern | Able to vary walking speed | Variable cadence; more natural gait; hydraulic stance control adds stability | Increased cost; possible weight or maintenance increase
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
npoliti
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