A ligament is a tough, stretchy band of tissue that connects bones to other bones and helps hold your skeleton together at the joints. Think of ligaments as your body's natural rope or cable system: they're strong enough to keep your bones properly aligned, but flexible enough to let you move.

You have ligaments all over your body. In your knee, ligaments connect your thigh bone to your shin bone and help keep your knee stable when you run or jump. In your ankle, ligaments hold the bones together while still allowing you to point your toes or rotate your foot. Your wrist, elbow, and shoulder all rely on ligaments to function properly.

When someone tears a ligament or suffers ligament damage, they've stretched or ripped one of these connective bands, usually during sports or a bad fall. Because ligaments don't have much blood flow, they heal slowly, which is why doctors often recommend rest and sometimes surgery for serious ligament injuries.

Don't confuse ligaments with tendons, which connect muscles to bones. An easy way to remember: ligaments connect bone to bone, like links in a chain. Both are crucial for movement, but they do different jobs in keeping your body working smoothly.