Usually, there are two types of knee surgery. The knee replacement surgery is done for patients suffering from severe arthritic conditions. In such cases, the knee is damaged in a way that disrupts your regular activities. However, surgery is often the last resort when no other solution is left or effective.u003cbr/u003eThe second type of surgery is meant for torn ligaments. If you have torn any ligament or multiple ligaments, there are chances that you may need surgery to repair them. However, you should consult your orthopedic surgeon, who would suggest the best treatment or solution for your condition.