MRI gives a good picture of the size of a meniscus tear and where it is. It also shows ligaments, cartilage, and tendons. MRIs of the knee are helpful to identify a meniscus tear and to find any related injuries to the ligament, cartilage, and tendons.
The overall sensitivity and specificity of MRI in diagnosing medial meniscus tears were found to be 87.9% and 75.3%, respectively, with an accuracy of 81.7%.
An MRI is 70 to 90 percent accurate in identifying whether the meniscus has been torn and how badly. However, meniscus tears do not always appear on MRIs. Meniscus tears, indicated by MRI, are classified in three grades. Grades 1 and 2 are not considered serious.
MRI . This uses a strong magnetic field to produce detailed images of both hard and soft tissues within your knee. It's the best imaging study to detect a torn meniscus.
Unless the torn meniscus has locked the knee, many people with a torn meniscus can walk, stand, sit, and sleep without pain.
Symptoms may go away but can come back from overuse or when you do activities that involve twisting. The pain may come and go over a period of years if the tear isn't treated. Larger tears usually cause more pain and immediate swelling and stiffness.
Pain in the knee joint. Swelling. Catching or locking of the knee joint. Inability to fully extend or bend the knee joint.
Symptoms of a meniscus tear may be different for each person, but some of the most common symptoms are: Pain in the knee joint: usually on the inside (medial), outside (lateral) or back of the knee. Swelling. Catching or locking of the knee joint.
Meniscus tears are the most frequently treated knee injuries. Recovery will take about 6 to 8 weeks if your meniscus tear is treated conservatively, without surgery. If your symptoms persist after 3 months or your symptoms become significant, your doctor may recommend surgery to repair the tear.
Continuing to walk on the affected leg can aggravate your symptoms, making pain and stiffness worse in as little as a few days. Plus, suffering a torn meniscus may also increase your risk of complications, like developing osteoarthritis in that knee.
It's not unusual for patients who are suffering with knee pain to have a “negative” MRI. This situation is relatively common. In cases of a strain or inflammation the MRI may indeed be negative for structural problems.
Will a knee brace help a torn meniscus? Yes. Although knee braces do not heal or treat your meniscus tear directly, they can provide extra support and stability for your knee while your meniscus injury heals. A good brace will protect your knee and take the pressure off your meniscus, allowing it to rest.
Medial meniscal root tears are associated with poor subjective knee function (24), and a relatively high proportion of these patients (31 %) require a knee replacement within five years (35), emphasising that medial root tears are part of a general degenerative process.
If not treated, part of the meniscus may come loose and slip into the joint. You may need surgery to restore full knee function. Untreated meniscus tears can increase in size and lead to complications, such as arthritis.
Ordinarily, your doctor or physical therapist will ask you to reduce your sports activities while your meniscus tear heals. Healing could take between four and eight weeks. However, the time depends on the severity and position of the tear.
Swelling or stiffness. Pain, especially when twisting or rotating your knee. Difficulty straightening your knee fully. Feeling as though your knee is locked in place when you try to move it.
Symptoms of a Meniscus Tear
The classic symptom of a meniscus tear is sharp pain along the knee joint line (medial or lateral), and it worsens with motions such as deep squatting or twisting of the knee. This pain is typically intermittent and can be accompanied with swelling.
Not all meniscus tears require a doctor's care. Pain and swelling that recur or don't go away are usually signs a tear is serious enough to see a doctor. Locking, or being unable to straighten or bend the knee also merits a trip to the doctor.
Individuals with a meniscus tear often complain of pain along the joint line. They often have pain or weakness with bending the knee and sometimes they have a catching or locking sensation. With an acute tear, individuals may notice a lot of swelling in the knee and often report that they heard or felt a pop.
Corticosteroid Injections
Although corticosteroids injected directly into the knee do not heal a meniscus tear, they may reduce swelling and discomfort. Some people may experience long-lasting relief. Your doctor may inject a small amount of anesthetic into the knee along with corticosteroids.
Range of motion may be limited due to pain, swelling, and/or mechanical limits from the tear. Daily activities such as walking up and down the stairs, walking down a hill, kneeling, and squatting are often made difficult due to increased pain in the knee.
Rest your knee when possible. Do not squat or kneel. Take pain medicines exactly as directed.
Avoid positions and activities that place excessive pressure on knee until pain and swelling resolve. Problematic positions include squatting, pivoting, repetitive bending (eg, climbing stairs, rising from seated position, operating clutch and pedals), jogging, and swimming using the frog or whip kick.