Suggest Possible Treatment For Knee Injury

Hi, I m 37 and I suffered a nasty knee injury just over a year ago playing touch footy. I had the typical symptons of trauma to the knee but I didn t see a GP or surgeon (I was denial that it was serious) so I took a few months off, and then started playing my touch footy again. A year on and all seems fine; I play my sports, go jogging, lift leg weights, etc without any problems, it s as if I never sustained an injury.. the only indication that there is a problem is sometimes I crowch down and my knee locks. I m thinking, this can t be good, so saw a surgeon who s says the meniscus is torn and I should get a knee arthroscopy. I m in 2 minds whether to do so or not as my knee has been fine. Is it in my best interest to get it done now or leave it till it starts to bother me?