I was sparring yesterday and my partner took me down. During the
process of taking me down I felt my right knee buckle. I'm going to
see the doctor this week. I've had ACL surgery for my other knee and I
know what it feels like for an ACL to blow. What does it mean when it
buckle? There's a little swollen and I can get around ( Limping ). The
range of motion hasn't been that bad. However, when I do fully extend
my leg it tends to hurt. Any thoughts?

-S