Has anyone ever suffered from a tightness around their knee joint as opposed to the muscles above and below it? My knee feels really strange, and i know i just described it as tight but it also feels kind of loose as well (i know that makes very little sense!) like the joint isn't doing what i want it to. Its very unpleasant - anyone felt anything similar? Is this spasticity - i also get tight a tight calf muscle in that leg quite often?