Knee Cleaned of Debris

Hi; I was just wondering, has anyone had their knee cleaned out before and what cause the debris in their knee and did you have to have it done again? I ask this question because I have just had my cleaned out at the age of 22.

See when I came around and spoke to the physio, I asked her why it happened, she said " I take it you do alot of sport and that could have caused it". Now I am no expert but I know plently of people that do more sports than I have ever done, and never had this problem, so I am bit concerned.

I would be very greatfull if anyone had anything similar done.