Meniscectomy-possible implications later in life?

I am a 20yo male 360lbs. I've recently learned that I have to get a meniscectomy on my left knee after a random injury working (a scarer at a haunted hayride). I try to be active, and I need to lose quite a bit of weight to be healthy. Are there any possible problems I will have later in life if I have my meniscus cartilage completely removed? Will they replace it with synthetic cartilage? I'm in a very physical line of work (farming). I need to know if I will need a complete knee replacement earlier than old age. I would think that missing cartilage will wear a knee pretty badly.