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Mark asked...

My knee 'buckles' for no reason.

I have an old knee problem (removed cartlidge 30 years ago) and my knee sometimes 'buckles' for no reason or feels like it may drop me to the floor. Should I have an arthroscopy to clean it out?

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The answer

The first thing to do when the knee starts to buckle (or give way), is to find the cause. There are a few different conditions that can make the knee unstable such as ligament damage, arthritis and cartilage problems. Your doctor will examine you and may need to refer you to a specialist. Sometimes an X-ray or MRI scan can diagnose the problem without the need for an operation or arthroscopy. You may also need to see a physiotherapist to show you how to strengthen the knee.

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