Meniscus Tears

A meniscus tear is a common knee injury, often caused by forcefully twisting or bending the knee. The meniscus is a crescent-shaped piece of cartilage that cushions the thigh bone and shin bone, distributes weight across the joint, and adds stability. Many tears improve with conservative care, and arthroscopic surgery can repair or remove damaged tissue when needed.

What Is A Meniscus Tear?

Each knee has two menisci: the medial meniscus on the inner side and the lateral meniscus on the outer side. These rubbery, C-shaped cushions absorb shock and help keep the knee stable.
 
Tears can be traumatic, from a sudden twist during sports, or degenerative, from age-related weakening of the cartilage. Pain is usually felt on the inner or outer side of the knee, depending on which meniscus is torn. Meniscus tears often occur together with ligament injuries and can contribute to osteoarthritis over time.

Treatments For Meniscus Tears

Treatment depends on the size, location, and severity of the tear, and on the patient's age, health, and activity level. Not all tears need surgery.

Non-surgical care

Surgical options

Rehabilitation through physical therapy is important after surgery to restore knee strength and mobility.

How a Meniscus Tear is Diagnosed

Diagnosis combines a medical history, including how the injury happened and any previous knee problems, with a physical examination for swelling, tenderness, instability, range of motion, and special tests for the meniscus. X-rays show bone abnormalities, while MRI provides detailed images of the meniscus and other soft tissues. Occasionally, arthroscopy is used to confirm the diagnosis and assess the extent of the tear.
 
If you already have MRI imaging, you can sign up for our free MRI review. Our team will examine your imaging, answer your questions, and help point you toward effective treatment.
Meniscus tear diagram showing the lateral and medial meniscus and a vertical tear

What Causes A Meniscus Tear?

Meniscus tears are typically caused by forceful twisting or bending of the knee, or by age-related degeneration. Common causes include:

Pivoting sports

Sudden twists and cuts in soccer, basketball, football, and tennis.

Deep squatting or kneeling

Loads the back of the meniscus.

Direct injury

A tackle or collision, often with ligament damage.

Age-related degeneration

Weakened cartilage can tear with ordinary movement.

Excess body weight

Increases load on the menisci.

Osteoarthritis

Arthritic knees are more prone to degenerative tears.

Repair Or Meniscectomy?

When surgery is needed, the surgeon either saves the meniscus or removes the torn portion, depending on the tear.

Meniscus repair

Saves the tissue

The torn edges are stitched together

  • Best for tears in the outer edge, which has blood supply.
  • Often preferred for younger, active patients.
  • Longer recovery while the tissue heals.

Meniscectomy

Trims the tear

The torn portion is removed

  • Used for tears that cannot heal, often degenerative ones.
  • Relieves catching and locking.
  • A shorter recovery; see meniscectomy.

Both are usually performed arthroscopically, through small incisions, as outpatient procedures.

Frequently Asked Questions

What is a meniscus tear?

A meniscus tear is a tear in one of the two C-shaped cartilage cushions between the thigh bone and shin bone. It is one of the most common knee injuries.

How do meniscus tears happen?

In younger people they usually follow a forceful twist or pivot of a bent knee during sports. In older adults, the meniscus weakens with age and can tear with everyday movements such as squatting.

Can a meniscus tear heal on its own?

Some small tears, especially in the outer edge of the meniscus where there is blood supply, can heal or become symptom-free with conservative care. Tears in the inner portion have limited ability to heal.

Does a meniscus tear need surgery?

Not always. Small or stable tears are often managed with rest, ice, medication, and physical therapy. Larger tears, or tears that cause locking, may need arthroscopic surgery to repair or trim the damaged tissue.

What is the difference between meniscus repair and meniscectomy?

A meniscus repair stitches the torn edges together so they can heal. A meniscectomy trims away the torn portion. The choice depends on the tear's location, pattern, and the patient's age and activity level.

Why does my knee lock or catch?

A loose flap of torn meniscus can get caught in the joint, causing the knee to lock, catch, or be unable to straighten fully. Persistent locking usually needs evaluation.

How is a meniscus tear diagnosed?

A physical examination with special tests, a history of the injury, and MRI usually confirm the diagnosis. X-rays show bone problems but not the meniscus itself.

How long is recovery after meniscus surgery?

Recovery after arthroscopic meniscectomy is often a few weeks. Recovery after a meniscus repair is longer, because the tissue needs time to heal. Physical therapy restores strength and mobility. Call (321) 499-4646 to schedule an evaluation.

Symptoms Of A Meniscus Tear

Not all meniscus tears cause every symptom, and some cause very mild symptoms. Common signs include:

  • Pain on the inner or outer side of the knee, worse with twisting.
  • Swelling that develops soon after the injury.
  • Stiffness, especially in the first few days.
  • Locking or catching, or difficulty fully straightening the knee.
  • A pop or click at the time of injury, and difficulty bearing weight.

Related Conditions

When A Meniscus Tear Needs Surgery

The Arthroscopic Advantage

How arthroscopic (keyhole) surgery of the knee compares with traditional open surgery.

Open surgeryArthroscopicMinimally invasive
IncisionOne larger incision to open the joint.A few small incisions for a camera and slim instruments.
Soft tissueMore disruption of muscle and tissue.Less disruption of the surrounding tissue.
VisualizationDirect view through the open incision.A magnified camera view inside the joint.
Hospital stayMay require a hospital stay.Usually outpatient; most patients go home the same day.
Recovery and scarringA longer recovery and a larger scar.Typically less pain, smaller scars, and a quicker start to rehabilitation.

Prompt treatment of a meniscus tear helps prevent further injury, and arthroscopic surgery means smaller incisions and a quicker start to rehabilitation.

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