A torn meniscus is one of the most common knee injuries. Activities that cause you to forcefully twist or rotate your knee, especially when putting your full weight on it, can lead to a torn meniscus. Symptoms of the torn meniscus can include pain, swelling, stiffness, or a block in the range of movement of the knee. Treatment often begins conservatively, depending on the type, size, and location of your tear. Tears associated with arthritis often improve over time with the treatment of arthritis, so surgery usually isn't indicated. Many other tears that aren't associated with locking or a block to knee motion will become less painful over time, so they also don't require surgery. Physical therapy can help you strengthen the muscles around your knee and in your legs to help stabilise and support the knee joint. If your knee remains painful despite rehabilitative therapy or if your knee locks, Knee arthroscopy is recommended.