Last reviewed: September 29, 2026

For ordinary recreational running, no. The largest study of this compared runners with people who did not run, and the runners had less hip and knee arthritis than the people sitting still. That is worth saying plainly, because it is the opposite of what most people believe.

Competitive running is a different story. Elite and professional runners, and people running high mileage for many years, have more arthritis than either group. So the pattern is not a straight line where more is worse. The worst places to be are running at an elite level, and not moving at all.

Two honest limits. This is what goes together, not what causes what. The people who run tend to be lighter and have fewer prior injuries, and those things protect a knee on their own. And a knee that has already been injured, particularly a torn ligament or cartilage, does not follow the same rules.

In general:

  • Recreational running does not appear to wear out a healthy knee.
  • Sitting still is associated with more arthritis than running is.
  • High mileage over many years is where the risk goes up.
  • A knee with a prior serious injury is a different question.

Drafted with AI assistance from published sources, reviewed and edited by Babak Sheikh, MD.

Sources:

This is general information about what published research shows. It is not medical advice and it is not about your situation. Reading it does not create a doctor-patient relationship with me. I am a retired orthopedic surgeon and I do not see patients. Talk with your own doctor before changing anything about your care. If something feels suddenly or seriously wrong, get medical care promptly rather than waiting.

This page is provided as is. I make no guarantee that it is accurate, complete or current, and medical evidence changes. Use of it is at your own risk.

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