What Is the Meniscus? Meniscus Tear Symptoms, Diagnosis and Treatment

Created: 09.12.2024 · Last Updated: 10.08.2026 · Category: Orthopedics and Traumatology · Prepared by the Academic Hospital Web and Editorial Board.

The menisci are strong fibrocartilage structures located between the femur and tibia within the knee joint. Each knee contains two menisci: the medial meniscus on the inner side and the lateral meniscus on the outer side.

They contribute to load distribution, shock absorption and knee stability. Meniscus tears may occur suddenly during sports or other twisting injuries, but they can also develop as the tissue becomes more degenerative with age.

Not every meniscus tear requires surgery. Treatment depends on factors including the tear pattern and location, whether the injury is acute or degenerative, whether the knee is mechanically locked, symptoms, age and activity level.

What Is the Meniscus?

The menisci are C-shaped pieces of fibrocartilage located between the femur and tibia. They increase the contact area between the joint surfaces and help distribute forces across the knee.

The medial and lateral menisci differ in their anatomy and mobility, but both play important roles in normal knee biomechanics.

What Does the Meniscus Do?

The meniscus is more than a simple cushion between two bones. Its functions include:

  • Distributing loads across the knee joint
  • Helping absorb shock during walking, running and jumping
  • Contributing to knee stability
  • Helping protect the articular cartilage
  • Improving joint congruence during knee movement
Preserving the meniscus matters: When surgery is required, current treatment principles aim to preserve as much healthy and functional meniscal tissue as possible.

What Is a Meniscus Tear and How Does It Occur?

A meniscus tear occurs when the structural fibres of the meniscus are disrupted. The mechanism can differ depending on age and tissue quality.

Traumatic Meniscus Tears

In younger and active people, a meniscus may tear when the foot is planted and the knee or body rotates suddenly, particularly while the knee is partly flexed.

Sports involving pivoting, sudden changes of direction or rapid stopping — such as football, basketball, tennis and skiing — can result in acute meniscal injuries.

Meniscus tears may occasionally occur together with other knee injuries, including anterior cruciate ligament injuries.

Degenerative Meniscus Tears

As people age, the meniscal tissue can become less resilient. A degenerative tear may therefore occur with relatively minor movements such as getting up from a deep squat or turning during everyday activities.

Degenerative meniscal changes can coexist with other age-related changes in the knee. For this reason, identifying a meniscal tear on MRI does not necessarily mean that the tear is the only source of knee pain.

Types of Meniscus Tear

Meniscal tears can have several different patterns, including:

  • Longitudinal or vertical tears
  • Radial tears
  • Horizontal tears
  • Flap tears
  • Bucket-handle tears
  • Complex tears
  • Meniscal root tears

The tear pattern alone does not determine treatment. Location, tissue quality, vascularity, displacement and the patient's clinical findings all need to be considered.

What Are the Symptoms of a Meniscus Tear?

Symptoms vary according to the size, type and location of the tear and whether other structures in the knee have also been injured.

Common symptoms include:

  • Pain or tenderness along the inner or outer joint line
  • Swelling or stiffness
  • Difficulty fully bending or straightening the knee
  • Pain when twisting, pivoting or squatting
  • Catching or locking of the knee
  • Clicking or catching sensations during movement
  • A feeling that the knee may give way

Some people notice a popping sensation at the time of injury. Pain and swelling are not always immediate and may become more noticeable over the following hours or days.

Persistent knee pain, recurrent swelling, catching or locking may require an orthopaedic assessment of the meniscus and other knee structures.

Book an Appointment

How Is a Meniscus Tear Diagnosed?

A diagnosis should not be based on an MRI report alone. Symptoms, the mechanism of injury, physical examination and imaging findings should be assessed together.

Physical Examination

The orthopaedic specialist assesses range of motion, swelling, stability and the location of tenderness. Examination techniques such as joint-line palpation, the McMurray test or the Thessaly test may be used when appropriate.

X-ray

A standard X-ray does not directly show the meniscus because it is soft tissue. X-rays may nevertheless help identify other causes of knee pain such as fracture, joint-space narrowing or osteoarthritis.

Magnetic Resonance Imaging (MRI)

MRI provides detailed images of the menisci, ligaments, cartilage and other soft tissues of the knee and is the preferred advanced imaging method for diagnosing acute meniscal tears.

Age-related degenerative meniscal changes can sometimes be seen on MRI even in people without significant symptoms. MRI findings therefore need to be interpreted in the context of the patient's symptoms and examination.

A meniscus tear on MRI does not automatically mean surgery is required. Symptoms, mechanical problems, activity requirements and response to non-surgical treatment are also important.

Can a Meniscus Tear Heal on Its Own?

Blood supply is not the same throughout the meniscus, and this has an important effect on healing potential.

The outer portion of the meniscus, close to the joint capsule, has a better blood supply and is often referred to as the red zone. Certain stable tears in this area may have the potential to heal or may be suitable for surgical repair.

The inner portion of the meniscus has much less blood supply. Tears in this region generally have a lower biological capacity to heal.

It is therefore incorrect to say that every meniscus tear heals on its own or that no meniscus tear can ever heal. Healing depends on location, tear pattern, size, stability and individual patient factors.

How Is a Meniscus Tear Treated?

Treatment is individualized. Important factors include:

  • Whether the tear is acute or degenerative
  • Tear pattern, size and location
  • Tissue quality and vascularity
  • Whether the knee is mechanically locked
  • Severity of pain and swelling
  • Age and activity level
  • Associated cartilage, ligament or osteoarthritis findings

Non-Surgical Treatment

Many meniscus tears do not require immediate surgery. Non-operative treatment may be appropriate for selected tears that do not significantly restrict knee motion or cause persistent mechanical locking.

Treatment may include:

  • Temporary modification of activities that worsen symptoms
  • Cold application during the acute period when appropriate
  • Compression and elevation when required
  • Pain-relieving or anti-inflammatory medication when medically appropriate
  • Exercise-based rehabilitation and physiotherapy to restore movement, strength and function

Exercise-based physical therapy is an important first-line option for many middle-aged and older patients with degenerative meniscal tears. Surgery should not be recommended on the basis of MRI findings alone.

What Is the Role of PRP and Other Biological Treatments?

Biological treatments such as platelet-rich plasma (PRP) continue to be studied in meniscal injuries. Some evidence suggests that PRP may have a potential role as an adjunct to selected surgical meniscus repairs, but the available evidence remains limited.

PRP, related platelet products or cell-based treatments should not be presented as established standard treatment for every meniscal tear or as direct replacements for appropriate rehabilitation or surgery. Any such treatment should be considered in the context of the tear pattern, individual patient factors and the current evidence.

When Is Meniscus Surgery Needed?

Surgery may be considered according to symptoms and tear characteristics. Examples include displaced tears that restrict knee motion, selected acute tears with good repair potential or persistent significant symptoms despite appropriate non-surgical treatment.

Meniscus Repair

When the tear pattern, location and tissue quality are suitable, the torn meniscus can be repaired using sutures. Preserving meniscal tissue is important for long-term knee biomechanics.

Because the tissue must biologically heal after a repair, rehabilitation is longer than after removing a small damaged portion of the meniscus.

Arthroscopic Partial Meniscectomy

For certain symptomatic tears that cannot be repaired, only the unstable damaged portion of the meniscus may be removed. This is called a partial meniscectomy.

When surgery is necessary, current principles aim to preserve as much functional meniscal tissue as possible.

The aim is not to remove the entire meniscus. Because the meniscus plays an important role in distributing joint loads, repairable tissue should be preserved whenever possible and resection should be limited to tissue that cannot be retained when clinically necessary.

How Long Does Recovery Take After a Meniscus Tear?

There is no single recovery period for every meniscus tear. Recovery depends on the injury and the treatment performed.

After Non-Surgical Treatment

Improvement in pain and function varies between patients. Some people improve over several weeks, while recovery of full strength and function may require a longer rehabilitation period.

After Partial Meniscectomy

Rehabilitation after arthroscopic partial meniscectomy is generally shorter than after repair. AAOS patient guidance indicates a recovery period of approximately 3 to 6 weeks, although return to work and sport varies.

After Meniscus Repair

Rehabilitation after meniscus repair is more gradual because the repaired tissue needs time to heal. Temporary restrictions on weight-bearing or knee movement may be required depending on the tear and surgical technique.

AAOS patient guidance describes rehabilitation after a meniscus repair as approximately 3 to 6 months. Return to competitive sport may take longer in some patients and should depend on knee function rather than time alone.

Can Meniscus Tears Be Prevented?

Not every meniscus injury can be prevented, particularly unexpected injuries during contact sports. Risk may nevertheless be reduced by:

  • Warming up appropriately before sports
  • Strengthening the muscles around the knee
  • Including balance and neuromuscular control exercises
  • Using footwear and equipment appropriate for the sport
  • Avoiding abrupt increases in training load
  • Avoiding high-risk pivoting when fatigued or when knee pain persists
  • Maintaining an appropriate body weight

When Should You See a Doctor?

An Orthopedics and Traumatology assessment may be appropriate if:

  • Knee pain interferes with normal activity or sleep
  • Swelling persists or repeatedly returns
  • You cannot fully bend or straighten the knee
  • The knee repeatedly catches or locks
  • The knee feels unstable or gives way
  • You have significant difficulty bearing weight after an injury
  • Symptoms do not improve with appropriate initial treatment

Severe deformity after an injury, inability to bear weight, rapidly increasing swelling or new numbness or loss of sensation may require more urgent medical assessment.

Have Your Knee and Meniscus Symptoms Assessed

Clinical examination and appropriate imaging can help determine whether rehabilitation, follow-up or arthroscopic treatment is the most appropriate option.

Frequently Asked Questions

What is the meniscus?
The meniscus is a fibrocartilage structure between the femur and tibia. Each knee contains a medial and lateral meniscus, which contribute to load distribution, shock absorption and knee stability.
How can you tell if you have a meniscus tear?
Joint-line pain, swelling, difficulty fully bending or straightening the knee, pain when twisting, catching, locking or a feeling that the knee is giving way may occur. Assessment is based on examination and MRI when indicated.
Can a meniscus tear heal on its own?
Some tears have healing potential. Appropriate tears in the outer, better-vascularized portion of the meniscus are more likely to heal, while tears in the inner area with limited blood supply have lower healing potential.
Does every meniscus tear require surgery?
No. Many tears can initially be managed with activity modification, pain management and physiotherapy. Surgery depends on factors such as tear pattern, displacement, locking, repairability and persistent symptoms.
Does a meniscus tear on MRI mean that surgery is necessary?
No. Degenerative meniscal findings may also occur in people without significant symptoms. MRI results should be interpreted together with symptoms, examination findings and other knee conditions.
How long does recovery take after meniscus surgery?
Recovery depends on the operation. Rehabilitation after partial meniscectomy may take approximately 3 to 6 weeks, while rehabilitation after meniscus repair may take approximately 3 to 6 months.
Can PRP heal a meniscus tear?
PRP is being studied for meniscal injuries. Some studies suggest potential benefit when used to support selected surgical meniscus repairs, but the evidence remains limited. PRP should not be considered a standard or definitive treatment for every meniscus tear.
Academic Hospital note: Treatment of a meniscus tear should not be determined solely by the grade stated on an MRI report. Whether the tear is acute or degenerative, its pattern, location and blood supply, mechanical locking, age, activity level and accompanying knee conditions should be considered together. You can book an appointment for an Orthopedics and Traumatology assessment.

References

  1. Academic Hospital. Menisküs Nedir? Menisküs Yırtığı Nedir? Tedavisi Nasıldır?
  2. American Academy of Orthopaedic Surgeons (AAOS). Meniscus Tears
  3. American Academy of Orthopaedic Surgeons (AAOS). Management of Acute Isolated Meniscal Pathology – Clinical Practice Guideline. 2024.
  4. Brophy RH, et al. Management of Acute Isolated Meniscal Pathology. J Am Acad Orthop Surg. 2025.
  5. NHS. Meniscus Tear (Knee Cartilage Damage)
  6. Mayo Clinic. Torn Meniscus – Symptoms and Causes
  7. Noorduyn JCA, et al. Effect of Physical Therapy vs Arthroscopic Partial Meniscectomy in People With Degenerative Meniscal Tears: Five-Year Follow-up of the ESCAPE Randomized Clinical Trial. JAMA Netw Open. 2022;5(7):e2220394.