A Swollen Knee Is Telling You Something. Here Is How to Read It.
If a knee clicks, that is usually noise.
If a knee swells, that is information.
Swelling is one of the few knee symptoms that reliably means something is going on inside the joint, and it is also one of the most commonly ignored. People notice the knee looks puffier, assume they overdid it, and carry on.
Sometimes that is exactly right. Sometimes it is not. Here is how to tell the difference, and why a swollen knee gets weak faster than most people realize.