Runner's Knee: Symptoms, Causes, And Treatment - Healthline

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Runner’s Knee

Medically reviewed by William Morrison, M.D. — Written by Maureen Donohue — Updated on April 17, 2023

Symptoms
Causes
Diagnosis
Treatment
Prevention

Runner’s knee is the common term used to describe any one of several conditions that cause pain around the kneecap (patella). It can be caused by running or any activity that repeatedly stresses the knee joint.

Conditions that can cause Runner’s knee include anterior knee pain syndrome, patellofemoral malalignment, chondromalacia patella, and iliotibial band syndrome.

According to the Harvard Medical School, runner’s knee is more common in women than in men, particularly in women of middle age. People who are overweight are especially prone to the disorder.

What are the symptoms of runner’s knee?

The hallmark of runner’s knee is a dull, aching pain around or behind the kneecap, or patella, especially where it meets the lower part of the thighbone or femur.

You may feel pain when:

walking
climbing or descending stairs
squatting
kneeling
running
sitting down or standing up
sitting for a long time with the knee bent

Other symptoms include swelling and popping or grinding in the knee.

In the case of iliotibial band syndrome, the pain is most acute on the outside of the knee. This is where the iliotibial band, which runs from the hip to the lower leg, connects to the tibia, or the thicker, inner bone of the lower leg.

What causes runner’s knee?

The pain of runner’s knee may be caused by irritation of the soft tissues or lining of the knee, worn or torn cartilage, or strained tendons. Any of the following can also contribute to runner’s knee:

overuse
trauma to the kneecap
misalignment of the kneecap
complete or partial dislocation of the kneecap
flat feet
weak or tight thigh muscles
inadequate stretching before exercise
arthritis
a fractured kneecap
plica syndrome or synovial plica syndrome, in which the lining of the joint becomes thickened and inflamed

In some cases, pain begins in the back or hip and is transmitted to the knee. This is known as “referred pain.”

How is runner’s knee diagnosed?

To confirm a diagnosis of runner’s knee, your doctor will obtain a complete history and conduct a thorough physical examination that may include a blood test, X-rays, an MRI scan, or a CT scan.

How is runner’s knee treated?

Your doctor will tailor your treatment to the underlying cause, but in most cases, runner’s knee can be successfully treated without surgery. Most often, the first step in treatment is to practice RICE:

Rest: Avoid repetitive stress on the knee.
Ice: To reduce pain and swelling, apply an ice pack or a package of frozen peas to the knee for up to 30 minutes at a time and avoid any heat to the knee.
Compression: Wrap your knee with an elastic bandage or sleeve to restrict swelling but not too tightly as to cause swelling below the knee.
Elevation: Place a pillow under your knee when sitting or lying down to prevent further swelling. When there is significant swelling, keep the foot elevated above the knee and the knee above the level of the heart.

If you need additional pain relief, you can take certain over-the-counter nonsteroidal anti-inflammatory medications (NSAIDs), such as aspirin, ibuprofen, and naproxen. Acetaminophen, the active ingredient found in Tylenol, can also help. You may want to talk to your doctor before taking these medicines, especially if you have other health conditions or take other prescription medications.

Once the pain and swelling has subsided, your doctor may recommend specific exercises or physical therapy to restore your knee’s full strength and range of motion. They may tape your knee or give you a brace to provide extra support and pain relief. You may also need to wear shoe inserts known as orthotics.

Surgery may be recommended if your cartilage is damaged or if your kneecap needs to be realigned.

How can runner’s knee be prevented?

The American Academy of Orthopaedic Surgeons recommends the following steps to prevent runner’s knee:

Stay in shape. Make sure your overall health and conditioning are good. If you’re overweight, speak with your doctor about creating a weight loss plan.
Stretch. Do a five-minute warmup followed by stretching exercises before you run or perform any activity that stresses the knee. Your doctor can show you exercises to increase your knee’s flexibility and to prevent irritation.
Gradually increase training. Never abruptly increase the intensity of your workout. Instead, make changes incrementally.
Use proper running shoes. Buy quality shoes with good shock absorption, and make sure they fit properly and comfortably. Don’t run in shoes that are too worn. Wear orthotics if you have flat feet.
Use proper running form. Keep a tight core to prevent yourself from leaning too far forward or backward, and keep your knees bent. Try to run on a soft, smooth surface. Avoid running on concrete. Walk or run in a zigzag pattern when going down a steep incline.

How we reviewed this article:

SourcesHistoryHealthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

AllisonKC. (2011). Taking the pain out of runner’s knee.http://www.health.harvard.edu/blog/taking-the-pain-out-of-runners-knee-201106072801
Patellofemoralpain syndrome. (2015).https://orthoinfo.aaos.org/en/diseases--conditions/patellofemoral-pain-syndrome/
Preventingrunning injuries. (2017).https://my.clevelandclinic.org/health/articles/8765-preventing-running-injuries

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Medically reviewed by William Morrison, M.D. — Written by Maureen Donohue — Updated on April 17, 2023

Runner's Knee: Symptoms, Causes, And Treatment - Healthline

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What are the symptoms of runner’s knee?

What causes runner’s knee?

How is runner’s knee diagnosed?

How is runner’s knee treated?

How can runner’s knee be prevented?

How we reviewed this article:

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