I tore my ACL 2 years ago and underwent surgery to have it repaired. Recently after playing a game of soccer I noticed later that night that my knee was slightly swollen and stiff, however I retained my full range of motion and had no pain when walking. After a few days swelling went down and now it feels back to normal. That was a roundabout way of explaining that I want to buy an active brace to prevent re-injury. Where do I go to get a brace that will work? Also brand names would be helpful.