What Is a Meniscus Tear?

You're pivoting to change direction — on a court, on a ski slope, even just turning awkwardly as you get up — and something in the knee gives, followed by a sharp pain along the joint line. That's the classic setup for a meniscus tear. The video above, just under three minutes long, introduces it the way the site's description puts it: a torn meniscus is one of the most common knee injuries, and it usually happens when the knee is forcefully twisted or rotated while your full weight is on it.

First, what the meniscus actually does

Each knee has two menisci — crescent-shaped pads of tough cartilage sitting between the thigh bone and the shin bone. Think of them as cushions and stabilisers in one: they spread your weight across the joint instead of letting it grind through a single spot, and they help the knee move smoothly. When one of those pads tears, the cushioning in that part of the joint is compromised, which is why a tear can ache deep inside the knee and why the joint sometimes catches or feels like it locks.

Step one: the twist that tears it

In younger, active people the tear is usually traumatic — a sudden twist with the foot planted. In older adults it can be far less dramatic. Cartilage wears and thins with age, so a tear can happen during an everyday movement like squatting or stepping off a curb, sometimes without one injury you can point to. Pain along the inner or outer joint line, swelling that builds over a day or so, stiffness, and a clicking or locking sensation are the complaints clinicians hear most often — but none of them, on its own, proves a tear.

Step two: how the knee is checked

The check-up starts with your story: how it happened, where it hurts, whether the knee locks or gives way. Then comes a hands-on examination, pressing along the joint line and moving the knee through specific rotations to see which movement reproduces the pain. X-rays don't show the meniscus itself, but they can rule out a fracture or show wear in the joint. When the picture still isn't clear, an MRI is the test that can actually show the cartilage and the shape of a tear — and that shape, along with where the tear sits, helps guide what happens next. A worn, arthritic knee is a different conversation altogether; our guide to knee replacement covers that end of the spectrum.

Step three: repair, trim, or rehabilitation

Not every tear needs an operation. Small or age-related tears are often managed first with rest from the aggravating activity, ice and elevation for swelling, and a rehabilitation programme to rebuild strength around the knee. When surgery is considered, it is usually keyhole (arthroscopic) surgery, and there are two broad approaches: stitching the torn edges back together so the pad can heal, or trimming away only the torn, unstable piece. The longer companion recording, "Meniscus Tear and Repair with Sutures", runs about 14 minutes and follows the repair approach. Which route fits depends on the tear's pattern, its location, and your age and activity — a specialist decision, made after examination and imaging, not from symptoms alone. A knee that truly locks, keeps swelling, or won't settle deserves that assessment promptly rather than months of pushing through it.

Frequently Asked Questions

What does a meniscus tear feel like?

Typically pain along the inner or outer line of the knee joint, swelling that develops over hours to a day, stiffness, and sometimes a clicking, catching, or locking feeling. Symptoms alone can't confirm a tear — an examination, and often an MRI, is what confirms it.

Can a meniscus tear heal on its own?

Some small tears, particularly towards the outer edge of the meniscus where the blood supply is better, can settle with rest and rehabilitation. Tears in areas with poor blood supply are less likely to heal by themselves, which is one reason the tear's location matters so much in planning treatment.

What does the anchor video show?

A short explainer titled "Meniscus Tear repair". The clip runs just under three minutes (2 minutes 57 seconds by the video file itself) and introduces torn meniscus as one of the most common knee injuries, usually caused by forcefully twisting or rotating the knee under your full weight.

How long is recovery after meniscus surgery?

It depends on what was done. Trimming a torn piece generally allows a quicker return to activity than a stitched repair, which needs protected healing time while the cartilage knits. Your surgical team will give you a specific timeline based on the procedure you actually had.

MedicalVideos.com has published trusted medical videos since 2007. The site was founded by Dr. Mohamed Ibrahim, MD, PhD — physician and researcher.

Educational only — this article is general information about meniscus tears, not medical advice and not a diagnosis. Knee pain with locking, repeated swelling, or pain that does not settle needs proper medical assessment.