Overview:

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This is a common injury of the knee. Your knee joint is cushioned by two c-shaped wedges of cartilage called the "menisci." Each individual cushion is called a "meniscus." This injury is a tear of one of these cushions.

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Causes:

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Meniscus tears are often caused by physical activity. Twisting or rotating your knee suddenly can cause a meniscus to tear. Kneeling, squatting and heavy lifting can as well. And as you age, your menisci gradually become thin and brittle, which can increase your risk for a tear.

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Symptoms:

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Symptoms may include a popping sensation and pain in your knee. You may have trouble straightening your leg. It may swell and stiffen, and it may lock in place.

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Treatment:

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Treatment options include rest, ice and medications. You may benefit from physical therapy. If these are not helpful, you may benefit from a surgical procedure to repair the damage. Your healthcare provider can create a care plan that is right for your needs.