It is important you take time to understand the costs and benefits for surgery to make a fully informed choice. The links below will take you to decision aids that can help guide you through this process and help you decide on the appropriate course of treatment.
Knee replacement
http://www.healthwise.net/cochranedecisionaid/Content/StdDocument.aspx?DOCHWID=uh1514&SECHWID=zx3678
ACL surgery
http://www.healthwise.net/cochranedecisionaid/Content/StdDocument.aspx?DOCHWID=aa54360
Meniscus tear
http://www.healthwise.net/cochranedecisionaid/Content/StdDocument.aspx?DOCHWID=te7366