Knee cracking, also known as crepitus, can stem from several factors, most commonly related to aging and changes within the knee joint. Here's a breakdown:
Potential Causes of Knee Cracking
- Cartilage Wear and Tear: As we age, the smooth cartilage that cushions our knee joint can degrade, leading to uneven surfaces. These irregularities cause popping or cracking sounds as the bones move against each other. This is confirmed by the provided reference stating: "As we get older, the cartilage in the knees can develop uneven areas due to wear and tear".
- Ligament Movement: The ligaments around your knee joint can also contribute to cracking sounds. They might tighten or shift as you move, producing an audible sound. The reference explains this, "The ligaments in the knee joint could also be tightening or shifting as you move, creating an audible sound."
When to be Concerned
While knee cracking is often harmless, especially if it's not accompanied by pain, stiffness, or swelling, you should consult a doctor if you experience any of the following:
- Pain in the knee
- Swelling around the knee
- Stiffness in the knee
- The sensation of your knee locking or giving way
Summary
| Cause | Description |
|---|---|
| Cartilage Wear & Tear | Uneven surfaces develop on cartilage due to aging, causing popping sounds. |
| Ligament Movement | Ligaments tighten or shift, resulting in audible sounds. |
