Causes, Symptoms, and Treatment of Meniscus Tears
The meniscus is a crescent-shaped piece of cartilage in the knee that helps cushion the joint and support stability. A meniscus tear can happen suddenly during twisting or pivoting movements, especially in sports, or it can develop gradually over time from wear and degeneration. Meniscus tears can happen on their own, but they can also occur along with other knee injuries, especially an ACL tear.
Symptoms can range from mild discomfort to more significant pain and swelling. Common symptoms include stiffness, limited mobility, catching or locking, and difficulty bending or straightening the knee comfortably. Some patients also notice that the knee feels unstable or does not move smoothly. When a meniscus tear happens with an ACL injury, patients may also describe a twisting injury, a popping sensation, rapid swelling, or a stronger sense that the knee may give way.
Treatment depends on the tear and the symptoms it is causing. Many meniscus tears improve with conservative treatment such as rest, ice, medication, and physical therapy. In more persistent cases, or when the knee locks or remains painful despite rehabilitation, surgery may be discussed.
Diagnosis of a Meniscus Tear
Diagnosis usually begins with a discussion of how the injury happened, where the knee hurts, and whether the knee catches, locks, or feels unstable. A specialist will examine the knee for swelling, tenderness, motion, and signs that the meniscus may be injured. A torn meniscus often can be identified during a physical exam, including testing how the knee moves and whether squatting or certain positions reproduce symptoms.
X-rays may be used to rule out other knee problems that can cause similar symptoms, even though the meniscus itself does not show up on X-ray. MRI is often the best imaging study to confirm a meniscus tear and look for other injuries inside the knee. Because meniscus tears can occur along with ligament injuries such as an ACL tear, imaging may also help identify whether there is additional damage that could affect the treatment plan.
Medical Management of Meniscus Tears
Many meniscus tears can be treated without surgery, especially when symptoms are improving and the knee is not locking. Early treatment often focuses on reducing pain and swelling and allowing the knee to settle down. Common first steps include rest, ice, and medication for pain relief when appropriate. If symptoms are more severe, temporary use of crutches may help reduce stress on the knee while it heals.
Activity Modification
Avoiding activities that increase pain is an important part of early recovery. Twisting, pivoting, kneeling, squatting, and high-impact activity may need to be reduced for a period of time while the knee calms down.
Physical Therapy
Physical therapy is often a key part of treatment. Therapy may focus on improving motion, rebuilding strength in the legs, and helping stabilize and support the knee joint. This can be especially important when the goal is to return safely to work, sports, or other activities without surgery.
Pain and Swelling Management
Ice, elevation, and anti-inflammatory or other over-the-counter pain medication may help reduce symptoms, especially early in the recovery process. These measures do not repair the tear itself, but they can make the knee more comfortable and support progress with rehabilitation.
When Surgery Is Considered
Surgery is more often considered when the knee remains painful despite rehabilitative therapy or when the knee locks or feels blocked during motion. In some cases, the meniscus can be repaired. In others, the torn portion may need to be trimmed if it is not likely to heal well.
Surgery may be discussed when:
• knee pain is not improving with time and rehabilitation,
• swelling and stiffness continue to limit function,
• the knee catches or locks,
• or symptoms are interfering with daily activity, work, or sports.
If a meniscus tear happened along with an ACL tear, treatment planning may also need to account for the ligament injury. In some patients, that affects the timing of surgery and whether both problems should be addressed as part of the same surgical plan.
The best way to know whether surgery should be part of the plan is through an orthopedic evaluation that considers symptoms, exam findings, imaging, and treatment goals.
