It doesn't sound like a Wikipedia reference-linkmeniscus tear that would require surgery - if it is the meniscus (you should always be able to find an area of joint line pain though) its probably minor fraying/degen changes that if rested/managed adequately would not need a clean-up. I'd ensure the hams/popliteus, patellofemoral joint and slump/SLR tests were clear before sending for imaging - and would typically trial treatment for 2-3 weeks and if no appreciable change then refer on.