Runner's Knee: Symptoms, Causes, Tests, and Treatments

Runner's knee, which accounts for 15-45% of all running-related injuries, is a common cause of knee pain in runners. It's a frequent overuse injury experienced by both runners and non-athletes who engage in repetitive knee motions, such as stair climbing or kneeling. Runner's knee typically manifests as a dull ache in the front of the knee, usually around or behind the patella (kneecap).

This condition often results from activities like running, jumping, bending, or kneeling, which can exacerbate the pain. Fortunately, with appropriate care and therapy, runner's knee usually heals within 4-6 weeks. The recovery time, however, depends on the severity of the damage and adherence to rehabilitation guidelines.

Runner's Knee Symptoms

Below are some of the common symptoms of runner's knee to look out for:

• Pain in and around the kneecap: This pain can be dull or sharp and often worsens with physical activity such as running or jumping, as well as bending or kneeling.
• Pain after sitting for a long time with your knees bent: This symptom is more prevalent in people who sit for extended periods of time. Upon standing and moving, the pain may manifest as stiffness or soreness in the knee joint and eventually subside.
• Clicking sound of the kneecap when you bend or straighten the knee: Caused by the kneecap rubbing against the thighbone (femur), this symptom may also involve a popping or grinding sensation in the knee joint. Others may hear the clicking sound and notice the resulting knee joint movement.
• Kneecap that is tender to the touch: Characterized by discomfort or tenderness around the kneecap, especially along the borders or beneath it. Physical exertion or pressure on the knee joint can intensify the discomfort, which may also involve swelling or irritation.
• Pain that gets worse when you walk downhill: Particularly common in activities involving downhill walking or running, this symptom may present as subtle or acute knee joint pain, accompanied by a sense of instability or weakness in the leg.

» Want to run pain free? Learn more about common running injuries and how to avoid them

Common Causes of Runner's Knee

Runner's knee can result from a single factor or a combination of factors. If you experience symptoms, consider these possible causes:

• Malalignment of the kneecap: This occurs when the kneecap isn't correctly aligned with the groove in the thighbone (femur), causing the kneecap to rub against the thighbone and create discomfort.
• Injury or trauma: Injury or trauma: A fall or blow to the knee can cause sudden injury or trauma to the knee joint, resulting in irritation and inflammation around the kneecap, leading to pain and discomfort.
• Tight hamstrings: Tightness in the hamstring muscles in the back of the thigh can contribute to the development of runner's knee by causing the kneecap to move out of place, resulting in pain and discomfort.
• Overuse: Engaging in physical activities that repeatedly stress the knee joint, such as running or jumping, can cause overuse injuries like runner's knee, causing irritation and inflammation around the kneecap.
• Weak thigh muscles: Weak quadricep muscles at the front of the thigh that struggle to support and maintain kneecap alignment can lead to runner's knee.
• Running with the feet rolling (pronation): Pronation can cause abnormal twisting and turning of the knee, resulting in discomfort and pain.

Diagnostic Tests for Runner's Knee

To diagnose Runner's Knee, you can perform a simple test by sitting on a chair with your knee bent at 90 degrees and pressing down with your fingers at the base of the kneecap. If this action causes pain or discomfort, you may have runner's knee.

A physical examination can also be conducted to evaluate the stability, range of motion, and functionality of the knee. During this examination, the doctor will also check for any stiffness or swelling in the knee joint.

If runner's knee is suspected, additional imaging studies, such as X-rays or MRIs, may be required to confirm the diagnosis and determine the severity of the condition. Obtaining a proper diagnosis is crucial for appropriate treatment.

Treatment Options for Runner's Knee

Common treatments for runner's knee include wearing a compression sleeve to reduce pain and swelling, icing and resting to alleviate symptoms and promote recovery, engaging in flexibility and strength exercises to improve knee alignment and reduce the risk of further injuries (while refraining from running until the condition improves), and using insoles to provide arch support, help with alignment concerns, and potentially aid in pain relief for those with alignment issues in their feet and/or knees.

Don't Let Knee Pain Hold You Back

It's essential to receive proper care for runner's knee to minimize pain and discomfort. For people with knee alignment issues or pain while running, insoles can be an effective solution.

You can check out the extensive selection of insoles reviewed by Footora experts to find the best option for your needs. By providing extra support and cushioning, custom insoles can lessen the impact on the knees and aid in pain relief. Additionally, they may help improve knee and foot alignment, reducing the likelihood of sustaining further injuries.