What Is a Meniscus Tear?

A meniscus tear is among the most common knee injuries, though the term itself can sound more alarming than the injury often is. Each knee has two menisci, small C-shaped pieces of cartilage that sit between the thigh bone and shin bone. Their job is to cushion the joint, help absorb shock, and add stability when you walk, squat, pivot, or run. When one of them tears, the knee can still work, but it often becomes painful and swollen. 

How Does a Meniscus Tear Happen?

There are two broad ways a meniscus tear happens. In younger or active people, it often comes from a sudden twist, pivot, or awkward turn during sports or exercise. In older adults, the cartilage can thin and weaken over time, so even a simple movement, like turning while standing up, can be enough to cause a tear. Some people feel a pop at the moment of injury, while others are able to keep walking and only notice the knee getting stiffer and more swollen over the next couple of days. Pain, swelling, catching, locking, a sense that the knee is giving way, and trouble fully straightening or bending the knee are all classic signs.

How Is It Diagnosed?

Doctors usually diagnose a meniscus tear by gathering a history of how the injury happened, the pattern of symptoms, and the physical exam. A common exam maneuver is the McMurray test, which puts gentle stress on the meniscus to see whether it triggers pain, clicking, or a clunking sensation. If imaging is needed, an MRI is often the most useful test because it can show the soft tissues inside the knee much better than an X-ray can. X-rays may still be used, but mainly to look for other causes of knee pain, such as arthritis or a bone injury.

What Are the Treatment Options?

The good news is that not every meniscus tear needs surgery. Many people improve with a more conservative approach: resting from aggravating activity, using ice, taking anti-inflammatory medication when appropriate, and doing physical therapy to rebuild motion and strength. Surgery may be considered when symptoms do not improve, when the knee is repeatedly catching or locking, or when the tear is in a location that can be repaired. Orthopedic surgeons generally try to preserve as much healthy meniscus as possible, because that cartilage helps protect the knee over time.

What Does Recovery Look Like?

Recovery depends on the type of tear and the treatment chosen. A meniscus that is trimmed usually heals faster than one that is repaired, but repair may be better for long-term joint preservation in the right patient. According to AAOS, recovery after a partial meniscectomy is often around 3 to 6 weeks, while recovery after meniscus repair is more often measured in months, about 3 to 6 months. Still, the overall outlook is encouraging: with the right diagnosis, a reasonable treatment plan, and patient rehab, many people return to normal daily activity and, in many cases, to sports.

References

1. MedlinePlus Medical Encyclopedia. Meniscal tears. Reviewed June 4, 2025.

2. American Academy of Orthopaedic Surgeons (AAOS). Meniscus Repair.

3. American Academy of Orthopaedic Surgeons (AAOS) OrthoInfo. Meniscus Tears.

4. National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). Sports Injuries—Types, Symptoms, & Risk Factors.

5. American Academy of Orthopaedic Surgeons (AAOS). Plain Language Summary: Clinical Practice Guideline on Acute Isolated Meniscal Pathology.

6. National Health Service (NHS). Meniscus tear (knee cartilage damage).

7. MedlinePlus. Meniscus tears – aftercare.

Assessed and Endorsed by the MedReport Medical Review Board