Sciatica -

[ASC1951]

get a golf ball , place it on a hard (dinning room ) chair sit on it with all you weight (on the affected side )and roll round with you buttock on it ,, he said youll know when you find the piriformis ,and he was bloody right it hurts like hell at first but it relaxes the muscle trapping the nerve.....well it did ease it for me for a while.

I use a lacrosse ball for the same purpose. It is a fair bit larger and so has a slightly lower point pressure, which I find makes it easier to use for this and other massage techniques.
For anyone who is into muscle massage there is a 'paper' which explains what items to use on what bits.
http://www.robertsontrainingsystems.com/downloads/SMR-manual.pdf
I'll admit to using one of those Grid Rollers and a Quadroller on my calves. I had chronic IT band problems and tight calves and those bits of apparatus, along with the lacrosse ball, have made a big difference.

 

[SatNavSaysStraightOn]

Yes, my knee does that too. Ha ha! I'm like a wobbly old lady!

hope this is not a sign of growing old - not ready for that one yet.

 

[Sara_H]

hope this is not a sign of growing old - not ready for that one yet.

Me neither! Still, better than the alternative!