Monitor an explained finding
Agree what changes should trigger a further review.
Knee & meniscus / Patient guide
Unstable, swollen or clicking knee replacement
Work out which symptoms need investigation and what they mean for the stability of your knee.
A planned, non-urgent second opinion with Professor Paul Lee
Start with your experience
Making sense of the concern
An artificial knee may feel unfamiliar, but a sound and a functional problem are not the same thing. Tell the consultant whether clicking is painless or happens with pain, catching, swelling or a feeling that the knee may give way. Describe the situations in which it occurs rather than trying to reproduce it repeatedly.
Repeated swelling or loss of confidence on stairs can affect your independence even when you have been told that an X-ray looks satisfactory. Bring those practical concerns into the consultation. The aim is to understand the symptom pattern without assuming that every noise means the replacement is failing.
Connect the evidence
Three parts of the picture
- Step 1
Sound
Is the click painless, painful or associated with catching?
- Step 2
Swelling
When does it appear, and does it settle?
- Step 3
Stability
When does the knee buckle or feel unreliable?
A discussion framework, not a diagnostic test or a predicted recovery timeline.
Your clinical second opinion
What the review can explore
Examination can assess how the knee moves and feels under appropriate clinical testing. The review also looks at the operation details, previous imaging and any episodes of falls or injury. A report of instability should be considered alongside pain, swelling and the demands you place on the knee.
Ask what further information is needed before calling the problem mechanical. Where infection is a concern, that question needs assessment too. The useful outcome is an explanation of what is known, what remains uncertain and which next step is likely to resolve the uncertainty.
From explanation to a plan
Possible next steps to discuss
These are directions the conversation may take. They are not a treatment recommendation for every person with these symptoms.
Support and rehabilitation
Discuss whether these fit the identified problem.
Consider revision
Ask which component or stability problem revision would correct.
Make the appointment yours
Questions worth bringing
- Is the clicking itself significant, or is the accompanying symptom the concern?
- Can you explain the giving-way episodes?
- What findings would make revision appropriate?
- What should I do if the knee suddenly becomes much worse?
If the explanation uses an unfamiliar term, ask what it means for your own decision. Before leaving, check who is arranging any next step and how you will receive the results.
Further reading
General patient information supporting the background to this guide. Your individual advice depends on assessment.
Related questions
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Talk through your next step.
£100 · 45 minutes · Monthly clinic sessions
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