It happens when carbon dioxide builds up in the joint's synovial fluid and is released as a gas bubble that bursts when the joint adjusts rapidly. It is the same process that causes knuckles to crack. Most of the time, this noise should cause no concern.
What does an ACL pop sound like?
Hearing a Pop Sound The moment your ACL tears, you might hear a popping sound. Often, the sound is so loud that those around you can hear it too. Usually, the pop sound is followed by an instant shift in your knee joint.
Is it OK if your knee pops?
Knee popping is often harmless. However, people may also experience knee popping and pain which could be a sign of ligament injury, meniscal tear, or patellar tracking problems.
Does a torn meniscus make a popping sound?
When meniscus tears happen suddenly, people may hear a “popping” sound as the injury happens. Other symptoms of a meniscus tear include: Pain in the knee. Swelling.
What are 3 signs of a meniscus tear in the knee?
Symptoms and signs of a meniscus tear:
- A popping sensation when the injury occurs.
- Swelling or stiffness.
- Pain, especially when twisting or rotating the knee.
- Difficulty fully straightening the knee.
- "Locked" feeling when trying to move the knee.
When should I worry about my knee popping?
Many people experience popping sensations and sounds in their knees. When pain or swelling accompanies the popping sound, a person may require medical attention. Doctors often do not know the exact causes of knee popping, but typically it results from a meniscus or ligament injury.