My knee hurts. I've been suffering from what I think is piriformis syndrome (basically a type of sciatica) for three months. I have seen a chiropractor and a physio and I'm not getting any better. I've been to my GP, she looked at me blankly and sent me for an x-ray, which came back clear, so I'm guessing there is no disc issue.
Over the last couple of weeks I've been getting a fair bit of knee pain. It came on suddenly one afternoon when it basically throbbed every twenty seconds. The pain feels like it is behind the knee cap. I don't experience it every day. As well as this, it clicks badly. If I'm sitting, and I straighten my leg in front of me with my right hand placed over the knee cap, as I bend it through 90 degrees, there is a real thick and obvious click at about 5 o'clock.
I've not been through anything like ths before. Does anyone feel familiar with my symptoms? Could the knee issue be a cause or symptom of my sciatic pain?

