Knee Clicking Sounds: Causes and Solutions for Your Symptoms

There is a persistent popping sound in the knee?

In July, while performing kettlebell squats, it seems that the pressure was too much, resulting in a knee injury.
During that time, my knee started making a clicking sound.
Unless I kept moving, it would click every few seconds with slight movements.
In July, I also experienced some discomfort in my knee when bending, squatting, or standing up quickly.
I decided to stop exercising and rest, but so far, the clicking sound in my knee has not improved; it still clicks every few seconds with minor movements, although the discomfort is not as severe as it was in July.
What could this symptom indicate?

Fan, 20~29 year old female. Ask Date: 2020/11/28

Dr. Shi Guozheng reply Orthopedics

It could be an injury to the ligament or the cartilage of the patella, which may cause noise during joint movement due to friction.
If there is no pain, it is generally not a concern.

Reply Date: 2020/11/28

More Info

Knee clicking sounds, often referred to as "crepitus," can be a common occurrence, especially after an injury or increased physical activity. In your case, it seems that the clicking began after you experienced a knee injury while performing kettlebell squats. This type of sound can be caused by several factors, and understanding these can help in determining the appropriate course of action.

Causes of Knee Clicking Sounds
1. Cartilage Damage: The knee joint is cushioned by cartilage, which can become damaged due to injury or wear and tear over time. When the cartilage is rough or uneven, it can cause clicking or popping sounds during movement.

2. Ligament or Tendon Movement: Sometimes, ligaments or tendons may snap over the bony structures of the knee, creating a clicking sound. This is often harmless if there is no accompanying pain.

3. Gas Bubbles: The knee joint contains synovial fluid, which lubricates the joint. Gas bubbles can form in this fluid and may burst during movement, causing a clicking sound.

4. Patellar Tracking Issues: If the kneecap (patella) does not move smoothly in its groove during knee flexion and extension, it can lead to clicking sounds. This can be exacerbated by muscle imbalances or weakness in the quadriceps.

5. Meniscus Injury: A tear in the meniscus, the cartilage that acts as a cushion between your thigh bone and shin bone, can also lead to clicking sounds, especially if the tear is significant enough to catch during movement.

Recommended Solutions
1. Rest and Ice: Since you have already stopped exercising, continue to rest your knee. Applying ice can help reduce any inflammation that might be present.

2. Physical Therapy: Engaging in physical therapy can be beneficial. A physical therapist can provide exercises to strengthen the muscles around the knee, improve flexibility, and enhance the overall function of the joint. Strengthening the quadriceps, hamstrings, and hip muscles can help stabilize the knee and reduce clicking sounds.

3. Gradual Return to Activity: Once you feel ready, gradually reintroduce activities. Start with low-impact exercises such as swimming or cycling, which can help maintain fitness without putting too much strain on the knee.

4. Knee Bracing: In some cases, using a knee brace can provide additional support and stability, especially during activities that may put stress on the knee.

5. Consultation with a Specialist: If the clicking persists or if you experience any pain, swelling, or instability, it is advisable to consult with an orthopedic specialist. They may recommend imaging studies, such as an MRI, to assess for any underlying issues like cartilage damage or meniscus tears.

6. Consideration of Injections: In some cases, corticosteroid injections or hyaluronic acid injections may be considered to reduce inflammation and improve joint lubrication.

Conclusion
While knee clicking sounds can be concerning, they are not always indicative of a serious problem, especially if there is no pain associated with the sound. However, given your history of injury and the persistence of the clicking, it is essential to monitor your symptoms closely. If the situation does not improve with conservative measures, seeking further evaluation from a healthcare professional is crucial to rule out any significant injuries and to develop a tailored treatment plan. Remember, early intervention can often lead to better outcomes and a quicker return to your desired activities.

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