Does a torn meniscus regenerate?

Dr. Carlos Rebollón
8 August, 2025
¿Se regenera un menisco roto?
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    Introduction: The goal that changed his life

    Mario, 36, played soccer on weekends with his friends. In a quick turn during a match, he felt a sharp pain on the inside of his knee. The diagnosis was clear: medial meniscus tear. “Is it going to regenerate on its own?” he asked. A very common question… and not always well answered.

    If like Mario you are wondering if a torn meniscus can heal on its own, this article is for you. We are going to debunk myths, understand the science and give you tools to take care of your knee.

    Mitos Comunes Sobre El Menisco

    What is the meniscus and why is it so important?

    The meniscus is a C-shaped cartilage that acts as a shock absorber between the femur and tibia. Each knee has two: a medial (internal) and a lateral (external) knee. Its function:

    • Distribute weight when walking or running

    • Stabilize the joint

    • Protect joint cartilage from wear and tear

    An injury to the meniscus can alter the entire biomechanics of the knee, affecting mobility, balance and generating progressive wear and tear (osteoarthritis).

    Can the meniscus regenerate on its own?

    Depends on. The regenerative capacity of the meniscus is determined by its blood supply. It is divided into three zones:

    Meniscus area

    Irrigation

    Regeneration capacity

    Red (external)

    High irrigation

    High chance of healing

    Red-white (intermediate)

    Medium irrigation

    Limited Possibility

    White (internal)

    No irrigation

    Very low or no capacity

    Conclusion:
    Not all torn menisci regenerate.
    Only some peripheral injuries have the potential to heal on their own, especially if they are accompanied by rest, therapy and good nutrition.

    ¿Qué Es El Menisco Y Por Qué Es Tan Importante?

    Common Myths About the Meniscus

    ❌ Myth 1: “If there is no pain, it is already healed”

    Truth: Many meniscal injuries are painless, but they still cause internal wear and tear.

    ❌ Myth 2: “It can only be cured with surgery”

    Truth: Some small, stable, peripheral breaks can heal with conservative treatment.

    ❌ Myth 3: “I had surgery and I no longer have a meniscus”

    Truth: Most modern surgeries seek to preserve as much of the meniscus as possible. Total meniscectomies are rare today.

    What symptoms indicate a torn meniscus?

    • Pain when bending or twisting the knee

      Clicking or blocking when moving

    • Persistent swelling

    • Feeling unstable

    • Inability to bend over or climb stairs

    If you experience any of these symptoms, consult your orthopedist. An MRI will confirm the diagnosis.

    ¿Qué Tratamientos Existen Para Un Menisco Roto?

    What treatments are available for a torn meniscus?

    Conservative (non-surgical) treatment

    Ideal for:

    • Small lesions in the red zone

    • Young patients or athletes

    • No symptoms of joint lock

    Includes:

    • Relative rest

    • Guided quadriceps strengthening exercises

    • Physical Therapy

    • Injections with PRP or hyaluronic acid

    • Use of stabilizing knee brace for a short period of time

    Surgical treatment

    When the injury is severe or does not improve with physical therapy, surgery is considered:

    1. Meniscal suture

    • Ideal if the break is in the red zone

    • The aim is to preserve the meniscus

    2. Partial meniscectomy

    • Only the damaged part is removed

    • It is the most common surgery

    3. Meniscus Transplant (Rare)

    • Only in extreme cases with missing meniscus and severe joint damage

    The surgery is usually outpatient, with a quick recovery if the specialist’s guidelines are followed.

    ¿Se Puede Prevenir Una Lesión De Menisco?

    Can a meniscus injury be prevented?

    Yes. Although some factors such as age or genetics cannot be controlled, there are effective preventive measures:

    ✅ Strengthens leg muscles
    ✅ Avoid sharp turns in sports without warm-up
    ✅ Wear shoes that are suitable for every surface
    ✅ Maintain a healthy weight to reduce the load on your knee
    ✅ Listen to your body: if it hurts, stop.

    Conclusion: Can Your Meniscus Heal? Only if you act in time

    Not all menisci regenerate, but many can be recovered or preserved with proper treatment. Ignoring symptoms or self-medicating can make the situation worse and lead to unnecessary surgery.

    If in doubt, consult an orthopedic specialist as soon as possible.

    Dr. Carlos Rebollón
    Orthopedist

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