Meniscus Tear
What Is a Meniscus Tear?
A meniscus tear is a structural injury involving damage to one of the two crescent-shaped cartilage pads located within the knee joint. These cartilage structures, known as the medial and lateral menisci, act as shock absorbers between the femur and tibia. They distribute load across the joint, enhance stability, and allow smooth bending and rotational movement.
When the meniscus becomes torn, its ability to cushion and stabilize the knee is compromised. This disruption alters joint mechanics and increases stress on surrounding cartilage and bone surfaces. Meniscus tears may occur suddenly during athletic activity or develop gradually as cartilage weakens due to age-related degeneration.
Because the meniscus plays a protective role in preserving joint health, untreated tears may contribute to progressive dysfunction and early osteoarthritis.
What Are the Causes
Meniscus tears develop through both traumatic and degenerative mechanisms.
Acute tears commonly occur during twisting or pivoting movements while the foot remains planted. Sports such as soccer, basketball, football, and skiing frequently involve these high-risk motions. A deep squat combined with rotation may also produce tearing.
Degenerative tears are more common in adults over age 40. Over time, cartilage loses elasticity and becomes more susceptible to injury. In these cases, even routine movements may result in tearing. Prior ligament injuries, altered joint alignment, chronic overload, and early osteoarthritis increase the likelihood of meniscal damage.
Excess body weight, repetitive occupational strain, and muscular imbalance further contribute to increased mechanical stress within the knee. In many individuals, meniscal injury develops gradually from cumulative wear combined with biomechanical factors.
Symptoms
Symptoms depend on tear size, location, and severity.
Pain is often localized along the joint line and may worsen with twisting, squatting, or weight-bearing activity. Swelling may develop within hours in acute injuries, while degenerative tears may present with gradual discomfort.
Mechanical symptoms such as clicking, catching, or locking of the knee are common. Some individuals experience difficulty fully straightening or bending the joint. Larger or displaced tears may produce instability or a sensation of the knee giving way.
As symptoms progress, daily activities including stair climbing, prolonged walking, kneeling, or athletic participation may become increasingly limited.
How Many People Are Affected?
Meniscus tears are among the most common knee injuries worldwide.
They frequently affect younger athletes due to trauma and are highly prevalent in middle-aged and older adults due to degenerative cartilage changes. Imaging studies show that a significant percentage of adults over age 50 demonstrate meniscal tears on MRI, even if symptoms are mild.
As populations remain physically active later in life, the overall prevalence of meniscal pathology continues to increase.
Complications
If not properly managed, a meniscus tear may accelerate joint degeneration.
Cartilage disruption increases focal pressure within the knee joint, potentially contributing to progressive cartilage wear and osteoarthritis. Persistent inflammation and swelling may further impair joint mechanics.
Large or displaced tears may cause recurrent locking episodes that limit mobility. Chronic instability may also increase strain on ligaments and surrounding soft tissues.
Early evaluation and structured treatment help preserve native cartilage and reduce long-term degenerative risk.
Diagnosis
Diagnosis begins with a comprehensive clinical evaluation, including review of symptoms, activity history, and physical examination. A clinician assesses joint line tenderness, swelling, range of motion, and mechanical stability. Specific orthopedic maneuvers help identify meniscal involvement.
At Victory Over Pain, Diagnostic Ultrasound may be incorporated as part of the evaluation to assess joint effusion, soft tissue inflammation, and dynamic movement patterns. However, MRI remains the gold standard for confirming meniscal tears and visualizing tear configuration and associated ligament injury.
X-rays are commonly obtained to evaluate bone alignment and assess for degenerative changes.
Accurate diagnosis combines clinical assessment with imaging findings to guide individualized treatment planning.
Treatment Options
Treatment focuses on relieving pain, restoring joint stability, and preserving long-term cartilage health.
Initial management often includes activity modification and structured rehabilitation to strengthen the quadriceps, hamstrings, and stabilizing musculature. Improving biomechanics reduces mechanical stress on the injured cartilage.
Low-Level Light Therapy (LLLT) may be incorporated in select cases to support cellular energy production, reduce inflammatory signaling, and enhance soft tissue recovery within the joint environment.
Extracorporeal Shockwave Therapy (ESWT) may be evaluated in cases involving chronic degenerative changes to stimulate local circulation and support tissue remodeling.
Platelet-Rich Plasma (PRP) therapy may be considered in appropriate candidates, particularly in degenerative meniscal pathology without mechanical locking. PRP involves concentrating the patient’s own platelets and delivering them under ultrasound guidance to support biologic repair and modulate inflammation.
In selected cases involving more advanced degeneration or complex joint involvement, MSC-derived exosome therapy or stem cell therapy may be evaluated to support joint environment optimization and cartilage preservation.
When mechanical symptoms such as locking persist or when significant structural displacement is present, arthroscopic repair or partial meniscectomy may be recommended.
Modern knee management prioritizes preserving native cartilage, optimizing joint mechanics, and implementing individualized regenerative strategies when appropriate.
Trusted Resources
SCHEDULE A CONSULTATION
Request a Physician Evaluation
Submit your information to connect with a participating physician in your region to determine whether regenerative therapy may be appropriate for your condition.