Surgery is the only thing that you can use. Usually by twisting and keeping the knee planted to the ground. Usually people hear an audible pop or snap. Localized swelling can fill the joint. A doctor can usually take a syringe and draw fluid from the knee to see if there is blood in the fluid.
Blood usually indicates tissue damage.
Usually a meniscus tear also involves damage to other areas of the knee. Definitely you need to see a doctor to get this repaired. Weakness of the knee. The meniscus is a pad of cartilage that acts as a cushion between the upper and lower leg bones. There are 3 types of tears, anterior horn tears, posterior horn tears, and bucket handle tears.