Knee

Meniscus Tear

A meniscus tear is one of the most common knee injuries we treat, and with the right care, the vast majority of patients return to full activity, including sport. At Maryland Orthopedic Specialists, our fellowship-trained sports medicine surgeons and orthopedic surgeons have extensive experience managing the full spectrum of meniscal pathology, from straightforward partial tears to complex bucket-handle tears and meniscal root avulsions, and are committed to preserving your meniscus whenever surgically possible. Whether your path forward is physical therapy, an injection, or arthroscopic surgery, you will leave your first appointment with a clear diagnosis and a personalized plan.

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What is meniscus tear?

Each knee contains two C-shaped wedges of fibrocartilage called the menisci: the medial meniscus on the inner side of the joint and the lateral meniscus on the outer side. Tears of the meniscus are one of the most common orthopedic problems.

Each knee contains two C-shaped wedges of fibrocartilage called the menisci: the medial meniscus on the inner side of the joint and the lateral meniscus on the outer side. These structures sit between the femur (thighbone) and tibia (shinbone) and serve several critical functions: distributing load across the joint surface, absorbing shock, providing secondary rotational stability, and facilitating joint lubrication. The menisci transmit approximately 50–70% of the compressive load across the knee in full extension and up to 85–90% in flexion. This load-sharing function depends on intact circumferential collagen fibers that convert axial compressive forces into outward "hoop stresses" along the meniscal body. When any component of this architecture is disrupted by tear, extrusion, or root avulsion, contact pressures on the underlying articular cartilage rise sharply.

Meniscal tears fall broadly into two categories based on mechanism. Acute traumatic tears occur most commonly in younger, active patients during sports involving pivoting, cutting, or deep knee loading. These are the same mechanisms responsible for ACL injuries, with which meniscal tears are frequently concurrent. Common acute patterns include vertical longitudinal tears, bucket-handle tears, and radial tears. Degenerative tears arise in middle-aged and older adults through cumulative wear of progressively less resilient meniscal tissue; an awkward twist rising from a chair can be sufficient to propagate a tear through aged fibrocartilage. Degenerative tears most often affect the posterior horn of the medial meniscus and frequently present as horizontal cleavage or complex (multiplanar) patterns. Epidemiological data confirm meniscal tears are among the most common musculoskeletal injuries, with an estimated incidence of approximately 60 per 100,000 person-years in the United States.

The anatomic location of the tear determines its healing potential and guides surgical decision-making. The outer third of the meniscus (the "red zone") has a blood supply from the peripheral capillary plexus and can heal following repair. The inner two-thirds (the "white zone") is avascular and relies on synovial fluid diffusion; tears in this region have limited intrinsic healing capacity. The medial meniscus is less mobile than the lateral, bears greater load in the medial compartment, and is the more commonly injured of the two. The lateral meniscus covers a larger proportion of the tibial plateau and is more mobile, making it less frequently torn in isolation but more commonly involved in ACL-associated injuries. There is a distinct and clinically important subtype. The meniscal root tear involves avulsion or tear at the posterior bony attachment and functionally converts the meniscus into an unanchored structure, dramatically increasing articular contact pressures and accelerating cartilage loss.

Symptoms — do you recognize these?

Meniscus tear symptoms can present suddenly after an acute injury or develop gradually over days to weeks following a degenerative episode. The following are the most common presentations:

Pain along the joint line — typically on the inner (medial) or outer (lateral) side of the knee, often worsening with deep bending, squatting, or twisting
Swelling — joint effusion that develops over 24–48 hours after an acute tear, or recurrent swelling with activity in chronic tears
Mechanical clicking or catching — a palpable or audible sensation during knee movement; common with displaced or unstable tear fragments
Locking or inability to fully straighten the knee — a hallmark of displaced bucket-handle tears in which the torn fragment lodges in the intercondylar notch
A sense that the knee wants to give way — particularly with pivoting or descending stairs
Stiffness — limited range of motion, especially in flexion, that persists beyond the acute phase
Pain with kneeling or deep squatting — due to increased posterior horn compression in loaded flexion positions

If your knee suddenly locks in a bent position and you cannot fully straighten it, seek evaluation urgently. This may represent a displaced bucket-handle tear requiring prompt intervention. For all other knee symptoms, call us at (301) 515-0900. We offer same-day appointments for acute injuries at our Bethesda and Germantown locations.

How we diagnose it

Diagnosis begins with a detailed history and focused physical examination. Your surgeon will palpate the medial and lateral joint lines, assess range of motion, and perform the following well-validated clinical provocative tests:

Joint line tenderness - the meniscus is directly palpated in the gap between the femur and the tibia. Direct tenderness is a sign of menidcal pain and possibly a tear.
McMurray test: the knee is taken from flexion to extension while the tibia is rotated; a palpable or audible click with pain over the joint line is a positive finding. Sensitivity for medial meniscal tears is approximately 55–65%, with higher specificity.

Standing X-rays are obtained at the first visit to evaluate joint space narrowing, alignment, and any bony pathology. MRI is the gold standard for meniscal evaluation, with sensitivity and specificity both exceeding 90% for medial meniscal tears in most published series. MRI characterizes tear morphology (longitudinal, radial, horizontal, complex, root), identifies associated chondral lesions, and assesses ligamentous integrity. For suspected meniscal root tears, specific MRI signs (the "ghost sign" (absence of normal meniscal tissue on sagittal images) and meniscal extrusion greater than 3 mm on coronal images) are diagnostic indicators that prompt urgent surgical consideration.

Most patients leave their first appointment at MOS with a confirmed diagnosis and a clear, individualized treatment plan.

Treatment options

Treatment is individualized based on your age, activity level, tear pattern, tear location, associated injuries, and long-term goals. Meniscal tissue is a precious, load-bearing structure. Our default is always preservation over resection.

Non-Operative Management

Non-operative treatment is appropriate for stable, partial-thickness tears in the avascular zone, degenerative tears without mechanical symptoms in middle-aged or older lower-demand patients, and acute tears in individuals who are not candidates for surgery. The non-operative program typically includes:

Surgical Procedure

Meniscus Repair

Arthroscopic suture repair that reattaches a torn meniscus to the vascular periphery, preserving native tissue and long-term joint health. Repair requires a longer recovery than meniscectomy but protects the knee from early arthritis.

Click for more Surgical Procedure

Partial Meniscectomy

Arthroscopic removal of the unstable, irreparable portion of a torn meniscus while preserving every millimeter of healthy tissue. Provides reliable symptom relief for tears that cannot be repaired due to location, pattern, or tissue quality.

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Recovery & rehabilitation

Recovery timelines differ substantially between the two surgical procedures, and patients should understand these expectations clearly before making a treatment decision.

After Partial Meniscectomy

Partial meniscectomy is an outpatient procedure with a rapid recovery course. Most patients are weight-bearing as tolerated within days of surgery, return to light activity within 2–4 weeks, and achieve full return to sport or heavy labor by 4–6 weeks in uncomplicated cases. Formal physical therapy focuses on restoring full range of motion, reducing post-operative swelling, and rebuilding quadriceps strength. These goals are typically achievable within 4–6 PT visits. Patients with more complex resections, associated chondral damage, or higher activity demands may require a longer supervised rehabilitation course.

After Meniscus Repair

Because the repaired meniscus must heal biologically before it can tolerate full mechanical loading, the recovery after meniscal repair is significantly longer. Patients typically follow a protected weight-bearing protocol for the first 4–6 weeks, with the knee maintained out of deep flexion to avoid tension on the repair site. Return to jogging and sport-specific training generally begins at 3–4 months, with full return to competitive sport at approximately 4–6 months for most repair patterns. More complex repairs (such as bucket-handle repairs or root repairs) may require closer to 6 months before sport clearance. This longer recovery is an investment in long-term joint health, not a drawback: patients who successfully heal a repaired meniscus retain substantially more protective meniscal tissue than those who undergo resection.

Physical Therapy at MOS

Our in-house physical therapy team at Bethesda and Germantown works directly alongside your surgeon throughout your recovery. There is no third-party referral and no communication gap. PT protocols are individualized to your specific procedure, repair configuration, and activity goals. For meniscus repair patients, our therapists follow a structured, phase-based protocol with milestone-driven progression to protect the repair during the critical early healing phase.

Frequently Asked Questions

Do I need surgery for a meniscus tear?

Not necessarily. Many meniscal tears (particularly stable, partial, or degenerative tears in lower-demand patients) respond well to structured physical therapy and activity modification. Surgery is indicated when you have significant mechanical symptoms (locking, persistent catching), when the knee fails to improve with adequate non-operative treatment, or when the tear pattern is one that will not heal on its own and is causing ongoing joint damage. We will review your MRI findings, your symptoms, and your activity goals together and make a recommendation tailored to you.

Can a meniscus tear heal on its own?

Tears in the well-vascularized outer (peripheral) zone of the meniscus have some intrinsic healing capacity with appropriate activity restriction. However, most symptomatic tears (especially those in the avascular inner zone) will not heal without intervention. Non-operative treatment can reduce symptoms and improve function even in tears that do not fully heal, but a structural tear in the avascular zone will not close on its own.

What is the difference between a meniscus repair and a partial meniscectomy?

A repair stitches the torn edges of the meniscus back together, preserving the tissue and restoring its load-distributing function. It requires a longer recovery (4–6 months to sport) and is only feasible when the tear is in a location with adequate blood supply and the right geometry. A partial meniscectomy removes the torn fragment. Recovery is faster (4–6 weeks), but the lost tissue does not grow back. Because meniscal tissue is protective against cartilage wear and osteoarthritis, we preserve and repair whenever it is surgically possible to do so.

What happens if a meniscus tear goes untreated?

The consequences depend heavily on the tear pattern. A small, stable degenerative tear in an older, lower-demand patient may be managed long-term without surgery. However, an unstable tear, a bucket-handle tear, or a root tear that goes untreated exposes the articular cartilage to abnormal stress and can accelerate the development of knee osteoarthritis. Longitudinal data confirm that significant meniscal loss (whether from untreated tears or from meniscectomy) is one of the strongest risk factors for tibiofemoral osteoarthritis over a 15–20 year follow-up period.

Can I walk on a torn meniscus?

Many patients with meniscal tears can walk without significant difficulty, particularly in the days to weeks after the initial injury as acute swelling subsides. However, the ability to walk does not indicate that a tear is minor or safe to ignore. Continuing to load an unstable tear through impact activities can extend the tear, displace it, or cause further cartilage damage. If you suspect a meniscal injury, have it evaluated before returning to full activity.

My knee locked and I can't fully straighten it. What should I do?

A locked knee that cannot be fully extended is a potential orthopaedic urgency. This presentation is the classic sign of a displaced bucket-handle tear in which a large fragment of meniscus is mechanically blocking the joint. Contact us immediately at (301) 515-0900 or go to the nearest emergency facility for evaluation. Prompt treatment protects the articular cartilage from further damage caused by the impinging fragment.