Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Prosthetic Knees

Overview of Prosthetic Knees

Generic Class KneeBasic FunctionPrimary IndicationMajor AdvantagesChief Limitations
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
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
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
Manual lock Knee of last resort Ultimate knee stability Eliminates knee flexion Abnormal gait; awkward sitting
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
Created by: npoliti