Understanding and Addressing a Meniscus Tear at Pain Doctors Medical
This location is for evaluation appointments only.
The meniscus is a C-shaped cartilage that acts as a cushion between the thigh bone (femur) and the shinbone (tibia) in the knee. A tear can occur from a sudden injury or gradual, age-related degeneration, often leading to pain, swelling, and joint instability.
While surgery is a common option for meniscus tears, studies suggest that approximately 41.3% occur in the “red zone”. This area of the meniscus has a rich blood supply, which may support the tissue’s natural healing response. Interventional orthobiologics may offer a potential alternative to surgery in such cases.
Procedures using Regenexx injectates are offered by physicians in the licensed Regenexx network, including at Pain Doctors Medical, 495 North 13th Street, Newark, NJ. These treatments use orthobiologics and are designed to support the meniscus’s natural healing response. This approach may help individuals improve knee function and joint health, potentially limiting the risks and extended recovery time often linked with surgery.
What Is A Torn Meniscus?
The knee is a complex joint formed by the connection of three main bones: the thighbone (femur), shinbone (tibia), and kneecap (patella). Ligaments and tendons provide stability, support the bones, and help manage forces generated during movement.
Soft connective tissues within the knee reduce friction and absorb impact. Among these are the menisci—two C-shaped cartilage pads located between the femur and tibia. Each knee has a medial meniscus on the inner side and a lateral meniscus on the outer side.
The menisci help distribute weight evenly across the joint and act as shock absorbers during activities like walking, running, or jumping. They also contribute to joint stability and smooth motion.
A meniscus tear occurs when these cartilage pads are damaged. This may result from sudden twisting, high-impact movements, or sports activities involving quick directional changes or physical contact. Over time, degenerative changes due to repetitive use or joint stress can weaken the menisci, increasing the likelihood of tears.
When a tear occurs, frayed or irregular meniscal edges may catch within the joint, causing symptoms such as knee pain, swelling, limited mobility, or a feeling of locking or instability.
Meniscus tears affect up to 14% of the population, particularly athletes and aging adults, and account for about 50% of all knee injuries.
Types of Tears in the Meniscus
Meniscus tears are classified by size and symptom severity. Minor tears may cause mild discomfort, while more severe tears can result in significant pain, swelling, and restricted knee movement. Tears may also be described by their location and pattern to help guide treatment decisions.
Intrasubstance Tear (Partial)
An intrasubstance tear occurs within the inner portion of the meniscus without reaching the surface. These tears often develop gradually due to degenerative changes and may not initially produce symptoms, though they can progress over time.
Horizontal Tear (Longitudinal)
A horizontal tear runs parallel to the tibial plateau, dividing the meniscus into upper and lower layers. This type of tear typically results from shear forces when different parts of the cartilage move in opposite directions. Over time, horizontal tears can develop into flap or bucket-handle tears.
Radial Tear (Transverse)
A radial tear extends from the inner edge of the meniscus toward the outer rim, disrupting the collagen fibers that help maintain its shape and distribute weight evenly. Damage to these fibers can affect joint stability and comfort.
Flap Tear
A flap tear occurs when a fragment of the meniscus detaches or shifts, creating a piece that may catch within the joint. This can lead to symptoms such as pain, clicking, or catching during movement.
Bucket-Handle Tear
A bucket-handle tear is a displaced form of a longitudinal tear, where a portion of the meniscus folds into the joint space, resembling a bucket handle. It often results from twisting or landing forcefully on one leg and may cause knee locking or difficulty fully extending the joint. This type accounts for over 30% of meniscus injuries.
Complex Tear
Complex tears involve multiple tear patterns within the same meniscus, often combining horizontal, radial, or oblique elements. They are generally associated with significant trauma or advanced degenerative changes and may occur alongside other knee injuries, such as ACL tears. These tears can be more challenging to manage.
Oblique Tear
An oblique tear runs diagonally across the meniscus and is typically caused by twisting motions or sudden directional changes. This pattern can create unstable fragments that interfere with joint function, leading to pain, swelling, or intermittent locking. Oblique tears may overlap with other tear types, complicating diagnosis and treatment.
495 North 13th Street
Newark, NJ 07107
Request an Appointment
Call to Schedule Schedule OnlineClinic Hours
| Sunday | Closed |
| Monday | 9AM–5PM |
| Tuesday | 9AM–5PM |
| Wednesday | 9AM–5PM |
| Thursday | 9AM–5PM |
| Friday | 9AM–5PM |
| Saturday | Closed |
Symptoms of a Torn Meniscus
A meniscus tear can cause knee pain, swelling, and limited movement, though the severity of symptoms varies. Some individuals may experience ongoing or intermittent discomfort, while others may have few noticeable symptoms. When a tear does not interfere with joint mechanics, daily activities may continue without pain.
Pain Along the Joint Line
Pain along the joint line, where the femur and tibia meet, is a common indicator of meniscus injury. Contributing factors may include:
- Nerve Response: Damage to the knee can irritate nearby nerves, sending pain signals to the brain.
- Inflammatory Response: The body may release substances such as prostaglandins and cytokines, which can increase nerve sensitivity, swelling, and discomfort.
- Persistent Inflammation: Low-grade inflammation may continue after initial healing, causing ongoing joint line discomfort. Factors such as prior knee injuries, body weight, aging, and repetitive joint stress may contribute.
Studies suggest that up to 61% of individuals with meniscus tears may not report symptoms like pain, stiffness, or aching. However, the following signs may indicate a tear and warrant further evaluation:
- Swelling or Stiffness: Fluid accumulation in the joint can create pressure, reduce mobility, and cause stiffness or warmth.
- Instability or Giving Way: The knee may feel unstable or buckle during movement, particularly when bearing weight or changing direction.
- Knee Popping After Injury: A popping sensation in the knee may indicate possible injury to the meniscus, ligaments, or cartilage. It may occur with swelling, discomfort, or joint instability. Read More About Knee Popping After Injury.
- Can’t Straighten Knee: Difficulty achieving full knee extension may stem from a meniscal tear, stiffness, or other joint damage. It may lead to swelling, discomfort, or locking sensations. Read More About Can’t Straighten Knee.
- Knee Locking Up: Knee locking may be caused by a meniscal tear, joint inflammation, or cartilage disruption. This can make it difficult to bend or straighten the knee and may present with swelling or discomfort. Read More About Knee Locking Up.
What Causes the Meniscus to Tear?
Meniscus tears are generally classified as acute or degenerative. Acute tears result from sudden trauma or forceful twisting, while degenerative tears develop gradually due to age-related changes that weaken the meniscus.
Knee Injuries
Trauma to the knee is a common cause of meniscal tears. Factors include:
- Sports Participation: Acute tears often occur during activities that involve pivoting, sudden stops, or contact, such as football, basketball, and soccer. Non-contact sports like tennis or skiing can also increase risk.
- Twisting or Rotation: Shear forces applied when different parts of the meniscus move in opposing directions can cause tears, often during abrupt twists, pivots, or landings.
Meniscus tears frequently occur with other knee injuries, particularly ACL tears. Research indicates an ACL injury can increase the likelihood of a concurrent meniscus tear by 22–86%.
Aging
Age-related changes affect knee structures, including the meniscus. Over time, tissue repair slows, leaving the meniscus thinner, less flexible, and more prone to injury.
Factors that may accelerate degenerative changes include:
- Excess body weight
- Tobacco use
- Repetitive strain from work or sports
- Poor posture
- Structural differences, such as naturally thin cartilage or alignment issues
- Chronic joint conditions like osteoarthritis
Studies show 60–90% of people with osteoarthritis may have meniscus tears visible on MRI.
How Does Regenexx Work For Meniscus Tears?
At Regenexx, we invented a new approach to orthopedic care we call Interventional Orthopedics. This minimally invasive alternative to meniscus surgery uses ultrasound-guided technology to precisely inject your own bone marrow concentrate — which contains stem cells — directly where it’s needed in the joint.
The cells in your bone marrow concentrate work at the site of your injury to promote your body’s natural healing abilities to treat the tear and avoid surgery1.
Can a Torn Meniscus Heal on Its Own?
Some meniscus tears may heal naturally, especially in areas with good blood supply. Factors influencing healing include:
- Tear Location: The meniscus has three zones: red, red-white, and white. Tears in the outer two zones have higher healing potential.
- Red zone: Outer edge with strong blood supply; may heal naturally.
- Red-white zone: Middle area with reduced blood flow; may heal more slowly.
- White zone: Inner area without blood supply; unlikely to heal without intervention.
- Tear Size: Smaller tears are more likely to heal, particularly if there is no loose fragment. Larger tears may obstruct movement or affect healing.
- Other Influences: Healing may be affected by age, prior injuries, or degenerative conditions like osteoarthritis.
Physical therapy may support healing in some cases. However, the body may benefit from additional help. Procedures using Regenexx lab processes and interventional orthobiologics at Pain Doctors Medical in Newark, New Jersey are designed to assist the body’s natural healing response and may offer an alternative to surgery or long-term medication use.
Meniscus tear recovery without surgery
Conventional Treatment Recommendations for a Torn Meniscus
Traditional approaches aim to reduce discomfort and support joint function. In cases of more extensive damage, further intervention may be considered.
- RICE Method: Rest, ice, compression, and elevation may help manage initial symptoms. Rest prevents further strain, ice reduces temporary inflammation, compression offers support, and elevation can reduce swelling. However, excessive icing may limit blood flow and affect healing.
- Nonsteroidal Anti-inflammatory Drugs (NSAIDs): NSAIDs are commonly used to reduce joint discomfort and inflammation. Although they may offer temporary relief for conditions involving joints, muscles, or the spine, prolonged use has been associated with increased risks to cardiovascular, kidney, and gastrointestinal health. These risks may require ongoing evaluation. Read More About NSAIDs.
- Surgical Procedures: Surgery may be considered when other treatments are ineffective or if a tear significantly limits joint function. Options include:
- Partial meniscectomy: Removal of the damaged portion.
- Meniscus repair: Suturing torn segments to support healing.
- Meniscus transplantation: Implanting donor tissue in cases of significant damage.
- Meniscus transplantation: Implanting donor tissue in cases of significant damage.
These procedures carry risks such as infection, blood clot formation, and the potential for additional damage to nearby knee structures. One study reported that approximately 19 percent of surgical procedures for meniscus tears fail within five years and may require revision surgery.
Why Consider Alternatives to Meniscus Surgery?
Research suggests that meniscus surgery is sometimes recommended more often than needed, and in certain cases, it may not provide better outcomes than physical therapy. Patients may benefit from being fully informed about the potential for varying long-term success rates and possible consequences of surgical intervention.
Procedures that involve partial or complete removal of the meniscus can alter the knee’s natural mechanics. These changes may increase the risk of joint degeneration, including the development of knee osteoarthritis, over time.
Torn Meniscus Recovery Time Without Surgery
Knee surgeries often require several months of recovery, which can involve rehabilitation to restore strength and mobility. The specific duration of this recovery depends on several factors, including the tear’s type and severity, the exact procedure performed, and a patient’s overall health. Research indicates that recovery outcomes may be significantly more challenging following knee replacement compared to less invasive procedures such as knee arthroscopy.
Procedures using Regenexx injectates may offer a non-surgical alternative to help preserve the meniscus’s cushioning and stabilizing role in the knee. In many cases, recovery time may be shorter than with surgery. Patients are often able to return to routine activities within a few weeks, with more physically demanding activities, such as sports, resuming within a few months.
| Regenexx-SD | Surgery | |
|---|---|---|
| Return to Daily Routine | 2 to 5 days | 6+ weeks |
| Return to Sports | 3 to 6 months | 1 year |
| Recovery | Brace, up to 6 weeks PT | Crutches, brace, extensive, no driving, 3 to 6 months PT |
| Pain Management | Mostly over-the-counter pain medication (days) | Prescription pain medication for weeks (weeks) |
| General Anesthesia | No | Yes |
| Keep Your Meniscus | Yes | No |
See how Regenexx helped Dimitri avoid surgery and quickly get back to what he loves.
Note: Like all medical procedures, Regenexx procedures have a success and failure rate. Not all patients will experience the same results
The Regenexx Approach for Torn Meniscus
The Regenexx approach uses proprietary methods that focus on enhancing the body’s natural healing ability through advanced interventional orthobiologics. This approach offers an alternative to conventional surgical treatments and may help reduce dependence on medications commonly used to manage joint pain.
Physicians in the licensed Regenexx network design customized treatment plans based on the meniscal injury’s type and location. Depending on a patient’s needs, the plan may involve one or more Regenexx orthobiologic injectates:
Regenexx SD Injectate
Regenexx SD injectate utilizes Bone Marrow Concentrate (BMC), which contains a patient’s own mesenchymal signaling cells and other healing agents. The Regenexx processing is customized for each patient’s condition, achieving cell concentrations significantly higher (from $6\times$ to $20\times$) than typical non-Regenexx procedures, which may enhance the body’s potential to repair damaged tissue.
Regenexx SCP Injectate
Regenexx SCP injectate is a highly concentrated form of platelet-rich plasma (PRP). Blood is drawn, processed to isolate growth factors, and delivered directly to the affected meniscus with advanced imaging guidance. This targeted approach allows for a higher growth factor concentration than typical PRP methods.
Regenexx PL Injectate
Platelet lysate (PL) injectate delivers a rapid, enhanced release of growth factors to support healing. It is often combined with Regenexx SCP or bone marrow concentrate as part of a comprehensive orthobiologic treatment strategy.
Watch a meniscus tear patient’s Regenexx procedure in this 4-minute video.
Before and After Procedure MRI Images
Structural changes in the meniscus can be tracked through MRI imaging for patients treated under Regenexx protocols. Pre-treatment images reveal the tear, while post-treatment images may show tissue repair or remodeling, highlighting the effects of targeted orthobiologic therapy.
Patient MRI – View 2
Make the Most Out of Your Knees With Care
Maintaining knee health requires a proactive approach:
- Regular low-impact activity: Exercises like swimming or cycling strengthen muscles around the knee and support joint function. Limiting high-impact activity after injury can reduce the risk of reinjury.
- Flexibility and stability routines: Stretching, mobility, and yoga help improve alignment and reduce strain on the joint.
- Healthy body weight: Reducing excess weight lowers stress on the knee and helps prevent degenerative joint conditions.
- Proper movement mechanics: Maintaining good posture and proper technique in daily activities and sports promotes even force distribution across the knee.
- Hydration: Adequate water intake supports cartilage elasticity and joint lubrication.
Even with preventive measures, knee injuries can still occur. Fortunately, surgery is not the only option. The meniscus has the capacity to heal when supported appropriately.
Procedures using Regenexx injectates are designed to support the body’s natural repair processes, potentially reducing the need for surgery or long-term use of medications such as opioids.
To explore whether this approach is appropriate for a patient’s condition, consultation with a physician in the licensed Regenexx network is recommended. Physicians at Pain Doctors Medical, 495 North 13th Street, Newark, NJ, can provide a thorough evaluation of the meniscal injury and determine a customized path forward.
FAQs
The meniscus is a cushion of cartilage between the bony ends (condyles) of your femur (the bone in your thigh) and tibia (the bone in your shin). Each knee has two menisci: a lateral meniscus and a medial meniscus.
Together, they reduce friction during movement, help the femur and tibia fit together, distribute your body weight across the knee, act as a shock absorber, help distribute fluid that lubricates the knee joint, and protect the gliding cartilage within the knee.
Tears of the meniscus can be the result of wear and tear on the joint or can occur when there’s an injury, such as some type of sports trauma.
The meniscus has a red zone — the outer third of the meniscus — with a good blood supply and a white zone — the rest of the meniscus — with no blood supply. Torn cartilage in the red zone has the potential to heal, particularly in those younger than 30, while tears in the white zone rarely heal due to lack of blood supply.
Knee meniscus
Research shows that surgery for a torn meniscus is overprescribed and often no more effective than physical therapy.2 Unfortunately, patients are not always informed of the low success rate of these procedures.
Whether patients have a partial meniscus “clean-up” (a piece is surgically removed) or a complete meniscectomy, outcomes are often unsuccessful. Both procedures change knee biomechanics and may later result in knee arthritis.
If you have a torn meniscus, you may experience knee pain or mechanical limitations. Some people have constant pain, some have intermittent pain, and others have no pain at all.
Unless the torn meniscus has locked the knee, many people with a torn meniscus can walk, stand, sit, and sleep without pain. Other possible symptoms include:
- Swelling or stiffness in the knee
- A popping sensation
- Difficulty fully straightening the knee
- Feeling as if the knee is collapsing under weight
Sometimes nothing, at least initially. If you have no pain or mechanical issues in the joint, you may choose to wait to see if it heals on its own. Depending on the type and severity of the tear, you may have pain, stiffness, and reduced function. There’s also the possibility of developing knee arthritis as a result of the damage.
Tears that occur in the red zone of your meniscus and have the best blood circulation heal the best with regenerative orthopedic procedures. The tears we see and treat most often are listed below; however, other types of tears may also benefit from regenerative orthopedic procedures. After a thorough examination and consultation, your Regenexx practitioner can answer this question more definitively.
Meniscus Flap Tear
These tears usually involve a small percentage of the meniscus and do not have the ability to heal on their own because they occur in an area that does not have a good blood supply. Flap tears are the type most commonly “trimmed” or “shaved”, (removed) leading to long-term issues.
Bucket Handle Meniscus Tear
The entire inner rim of the medial meniscus can be torn in what is called a bucket handle tear. These tears usually occur in an area of good blood supply in the meniscus
Complex Degenerative Meniscus Tears
These tears of the meniscus are usually seen as a part of the overall condition of osteoarthritis of the knees in older adults and cause the menisci to fray and tear in multiple directions.
consistent MRI finding associated with pain is swelling in the bone called bone marrow edema (BME) or a bone marrow lesion (BML). Current research on knee pain due to arthritis has shifted from cartilage loss to this bone marrow swelling.
Get started to see if you are a Regenexx candidate
To talk one-on-one with one of our team members about how the Regenexx approach may be able to help your orthopedic pain or injury, please complete the form below and we will be in touch with you within the next business day.
References
1. Centeno C, Sheinkop M, Dodson E, Stemper I, Williams C, Hyzy M, Ichim T, Freeman M. A specific protocol of autologous bone marrow concentrate and platelet products versus exercise therapy for symptomatic knee osteoarthritis: a randomized controlled trial with 2 year follow-up. J Transl Med. 2018 Dec 13;16(1):355. doi: 10.1186/s12967-018-1736-8. PMID: 30545387. [Google Scholar]
2. Moseley JB, O’Malley K, Petersen NJ, Menke TJ, Brody BA, Kuykendall DH, Hollingsworth JC, Ashton CM, Wray NP. A controlled trial of arthroscopic surgery for osteoarthritis of the knee. N Engl J Med. 2002 Jul 11;347(2):81-8. doi: 10.1056/NEJMoa013259.
PMID: 12110735. [Google Scholar]
