Thanks for the reply - really useful. Should I be only excercising when it is pain free? I normally stop if/when it starts hurting but should I keep going?
Regarding taping the knee, I had thought of that but read somewhere that it stops the quads engaging properly when squatting - any truth in this?
Should I stop running as well until the quad is strengthened? I haven't been doing much just enough to stop me getting too fat! and I always stop if it hurts. I'm not sure if this is hindering the recovery process though...