What They Mean and When to See a Doctor
Knee clicking afterknee replacement surgeryis common.
Some people describe it as a clicking or clunking sound when they walk.
In general, knee replacement clicking does not indicate a problem.
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This article discuss knee replacement clicking.
Usually, a little reassurance that nothing harmful is taking place is all that is needed in these situations.
Determining the source of the noise is something your surgeon can help you with.
Generally speaking, you would expect noises to diminish over time, not increase.
Parts of a Prosthetic Knee
Most knee replacements are made of four separate parts.
Different implants are designed to be held in place in different ways.
Moreover, yoursurgeon may have a preferencefor a particular jot down or brand of implant to use.
Patellar Component
The patellar componentis an artificial extension of the kneecap.
This part replaces the gliding surface of the kneecap.
The kneecap itself is not replaced.
Polyethylene Spacer
A polyethylene spaceris a plastic appliance inserted between the metal femoral and tibial components.
This allows for smooth movement of the knee joint back and forth.
There are variations in the shape and thickness of the polyethylene components to match each particular patient and situation.
What Causes Knee Replacement Clicking?
Most noises are the result of the metal and plastic components rubbing against each other.
Knee-strengthening exercises can sometimes help, particularly weighted leg extensions.
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