How Do I Tell If My Knee Pain Comes From Cartilage or Ligaments?
If you experience grinding, stiffness, or locking while bending your knee, the pain often indicates cartilage damage. However, if you feel sharp pain along the inner, outer, or back of the knee (especially after a twist/pivot), you may have an ACL/MCL ligament injury. You may also notice a popping sensation at the time of injury, which often leads to immediate knee instability.
At Total Orthopedics & Sports Medicine, you can get an accurate diagnosis for your knee pain. Our specialists conduct a detailed physical exam to check your knee instability and range of motion. We also use a CT scan or MRI to check the extent of articular cartilage damage. Call us today at 855-321-6784 to book your appointment.
What’s the Difference Between Ligament and Cartilage Injuries?
Ligament injuries involve stretching, partial tears, or complete ruptures of the knee’s connective tissue, such as the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL). In contrast, cartilage injuries involve damage to the articular cartilage or meniscus cartilage that cushions the knee joint.
Here’s how ligament and cartilage injuries affect your knee joint, movement, and overall function:
Ligament Injuries
Ligament injuries reduce stability and proper alignment in the knee joint. Moreover, they can disrupt blood flow within the surrounding tissues, slowing healing and increasing swelling. This reduced blood flow can also lead to a Baker’s cyst, resulting in a swollen, fluid-filled sac behind the knee.
Here are some common ligament injuries that can affect your knee:
- Anterior Cruciate Ligament (ACL) Injury: Often occurs from sudden twists or pivoting, causing sharp pain and swelling.
- Posterior Cruciate Ligament (PCL) Injury: Usually results from a direct impact on the shin bone, leading to difficulty putting weight on the knee.
- Medial Collateral Ligament (MCL) Injury: Causes pain on the inner side of the knee and instability.
- Lateral Collateral Ligament (LCL) Injury: Leads to outer knee pain and reduced stability.
Cartilage Injuries
Cartilage injuries reduce shock absorption and smooth movement within the knee joint. Additionally, according to the NHS, you may experience knee tenderness, stiffness, and swelling. Some people also notice a crunching, clicking, or grinding sensation during movement, which often indicates cartilage damage or meniscus issues.
Here are different types of knee cartilage injuries:
- Articular cartilage damage
- Degenerative disease
- Chondromalacia patella
- Osteochondral fracture
- Plica syndrome
- Meniscus tears
- Traumatic cartilage lesions
Can Poor Muscle Balance or Weakness Contribute to Knee Injuries?
Yes, poor muscle balance or weakness can contribute to knee injuries as they disrupt proper alignment and joint stability. When the leg muscles, including the quadriceps and hamstrings, are weak, the knee joint moves abnormally during activity. This imbalance increases stress on the ligaments and meniscus cartilage, increasing the risk of ligament injury or chronic knee pain.
Moreover, according to ResearchGate, a systematic review and meta-analysis found that knee extensor muscle weakness increases the risk of developing knee osteoarthritis. The analysis included five cohort studies with 5,707 participants followed for 2.5 to 14 years. Participants with weak knee extensor muscles had a 65% higher risk (OR 1.65, 95% CI 1.23–2.21) of developing symptomatic knee osteoarthritis.
How Does Tenderness Around the Kneecap Help Diagnose Cartilage Problems?
Tenderness around the kneecap indicates damage or inflammation of the articular cartilage or patellofemoral joint cartilage. During a physical exam, applying pressure directly to the patella reproduces pain if the underlying cartilage is injured. This localized pain helps differentiate cartilage injuries from ligament injuries.
The following tenderness tests help your doctor identify the severity of cartilage damage:
- Patellar Tendon Grind Test (Clarke’s Test): Your doctor presses downward on your kneecap while you contract your quadriceps. Any pain, grinding, or clicking during this process indicates cartilage irritation.
- Trochlear Groove Palpation: During this test, the doctor palpates (presses with their hands)the groove at the front of your knee to check for localized cartilage damage.
- Edge Palpation of the Patella: Your healthcare provider may press along the medial and lateral edges of your kneecap to detect cartilage wear and tear.
At Total Orthopedics & Sports Medicine, our doctors utilize these physical tests, along with MRI and CT scans, to accurately diagnose cartilage injuries. This approach helps us to design a precise treatment plan to relieve pain and restore knee function. Fill out our contact form to schedule your consultation today.
Is Joint Locking or Catching a Sign of Cartilage Lesion?
Yes, joint locking or catching often signals a cartilage lesion in the knee. Meniscus tears, especially of the medial or lateral meniscus cartilage, can cause loose fragments that get trapped between the thigh bone (femur) and shin bone (tibia), leading to the knee locking or catching. Similarly, articular cartilage flaps or fissures in the patellofemoral joint can produce mechanical blockage during bending or straightening.
Additionally, this locking is usually accompanied by swelling, tenderness along the joint line, stiffness, or intermittent sharp pain. Over time, repeated catching can further damage the cartilage and increase the risk of knee arthritis, patellar tendinitis, or patellofemoral pain syndrome. It may also limit your ability to bear weight or perform activities like climbing stairs, squatting, or running.
When Should You See a Specialist for Chronic Pain In the Knee?
You should see a knee specialist immediately if knee pain persists for more than 2 weeks despite rest, ice therapy, or over-the-counter medications. You should also seek immediate medical attention if you notice swelling, joint locking, instability, or difficulty putting weight on your knee. Without proper treatment, these knee problems may lead to autoimmune diseases like rheumatoid arthritis and progressive joint degeneration.
Other than that, you should visit us if you experience any of the following symptoms:
- Sudden inability to bend or straighten the knee fully
- Sharp, stabbing pain at night or at rest
- Severe bruising or deformity around the knee
- Persistent catching or grinding with every movement
- Rapid swelling immediately after a minor activity
- Severe pain radiating to the thigh or lower leg
Can Doctors Use Resistance Tests to Identify Ligament Damage?
Yes, doctors often use resistance tests to identify ligament damage in the knee. During these tests, doctors apply controlled pressure on your knees while you move or resist movement. If you experience pain, looseness, or your knee shifts abnormally, it may indicate a partial dislocation, complete rupture, or ligament tears. These tests are often combined with imaging, such as MRI and CT scans, to confirm the extent and location of the injury.
Are Cortisone Injections Beneficial for Cartilage or Ligament Problems?
Yes, cortisone injections are effective for reducing pain and inflammation in the knee caused by cartilage damage or ligament injuries. These injections copy natural cortisol, a hormone that regulates inflammation in the body. This artificial cortisol suppresses inflammatory cells like macrophages and T-cells and blocks pro-inflammatory cytokines. As a result, swelling or pain in the articular cartilage and ligaments decreases.
Cortisone injections also decrease fluid buildup in the joint, improve blood flow, synovial fluid function, and restore joint mobility. However, they only provide temporary relief and do not repair cartilage. Therefore, you should contact our knee specialists to address the underlying cause of your knee pain. After diagnosing the injuries, we provide surgery, bracing, or regenerative therapies to improve long-term joint function.
Tip: Avoid high-impact activities for at least 48–72 hours after a cortisone injection to reduce stress on the knee.
How Effective Is Aquatic Therapy for Knee Cartilage and Ligament Recovery?
According to a systematic review on NCBI involving 883 participants, aquatic therapy significantly improves pain, physical function, and knee extension strength in patients with knee osteoarthritis. This meta-analysis showed a 40% reduction in WOMAC pain and about a 20% reduction in VAS pain. Moreover, it revealed a 20% improvement in WOMAC physical function and approximately a 10% improvement in TUGT performance.
Can Prevention Training Programs Reduce the Risk of ACL and MCL Injuries?
Yes, prevention training programs can help you reduce the risk of ACL and MCL injuries. These programs focus on strengthening your thigh muscles, hip stabilizers, and core. For example, strengthening exercises like single-leg squats, lateral lunges, hamstring curls, and plyometric jumps improve knee stability and muscle coordination.
Similarly, balance drills and proper landing techniques also train the body to absorb sudden movements, lowering the risk of ligament tears during sports. Here are some other exercises you can perform to prevent ACL and MCL injuries:
- Side-lying leg lifts
- Box jumps with controlled landing
- Single-leg deadlifts
- Lateral band walks
- Agility ladder drills
Visit Total Orthopedics & Sports Medicine for Advanced Diagnosis of Knee Injury!
Ongoing pain from cartilage and ligament injuries can severely affect the quality of your life. You may experience stiffness, swelling, or weakness in your knee during simple movements, such as walking or bending. In such cases, an inaccurate diagnosis can delay proper treatment, increasing the risk of further cartilage damage and limiting long-term knee function.
Our team at Total Orthopedics & Sports Medicine uses MRI, ultrasound, and digital X-rays to provide detailed imaging of your knee anatomy. Moreover, to speed up your recovery, our team offers all treatments under one roof, including conservative treatments, knee surgeries, and pain management. Call us today at 855-321-6784 or visit our clinic at 1789 Sheepshead Bay Rd, Brooklyn, NY 11235, to begin your knee treatment.
FAQs
How To Get Rid of Knee Cartilage Pain?
Hyaluronic injections, platelet-rich plasma (PRP), and stem cell therapy are the most effective treatments for knee cartilage pain. You can also manage pain and inflammation with nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen. Additionally, using knee braces helps stabilize the joint, reduce stress on damaged cartilage, and improve alignment during daily activities.
Does Knee Instability Always Mean a Ligament Injury?
No, knee instability does not always indicate a ligament injury. Instability can also result from weak quadriceps muscles, torn cartilage, meniscus tears, or inflammation that limits your joint control. Moreover, your knee may feel unstable when swelling disrupts your knee’s position sense (your knee’s ability to detect movement).
Can Cartilage Damage Cause Swelling Even Without a Major Injury?
Yes, cartilage damage can lead to swelling even without an acute injury. When the cartilage wears down or gets irritated, it triggers inflammation and a burning sensation inside the joint. This inflammation increases fluid production, leading to swelling, stiffness, and discomfort. In many cases, everyday activities, like squatting and climbing stairs, can also overload the joint and cause swelling.
Is a Snapping Sound Always Linked to Ligament Tears?
No, a snapping sound does not always signal ligament tears. The sound can also result from the meniscus, inflamed tendons, or gas bubbles releasing inside the joint (called cavitation). Moreover, popping may occur when the kneecap shifts out of its groove due to weak quadriceps or tight surrounding tissues.
Does Resting Improve Ligament Pain Faster?
Yes, resting can reduce ligament pain in the early phase because it limits stress on the injured fibers and allows inflammation to settle. However, rest alone does not speed up full recovery. You should also perform controlled strengthening exercises, balance training, and gentle range-of-motion movements to restore knee stability.
Do Cartilage Injuries Cause Pain Only During Certain Activities?
No, cartilage injuries often cause pain even at rest, but the pain worsens significantly during specific activities. For example, movements like climbing stairs, squatting, or twisting put extra stress on damaged articular or meniscus cartilage, intensifying discomfort. You may also notice grinding, clicking, or stiffness during these activities.
Can Cartilage Injuries Heal on Their Own Without Treatment?
No, cartilage injuries rarely heal on their own because cartilage has minimal blood flow. Without proper treatment, damage to the articular or meniscus cartilage can worsen over time, leading to chronic anterior knee pain, swelling, stiffness, and reduced shock absorption. To prevent these long-term complications, you should contact us for an accurate diagnosis and a targeted treatment plan.
