For many years medical dogma and anecdotal evidence has suggested running is bad for your knees and causes arthritis. Many well meaning health professionals have advised runners to cut down or even stop running altogether to protect their joints, but the magnetic osteoarthritis remains weak to guide their management.
Anecdotally, many individuals consider running detrimental to their knees and either do not run at all in fear of causing themselves harm, or proceed to participate in alternative sports, such as cycling. As with any structure, excessive, repetitive loading will eventually lead to failure. It would therefore seem logical to consider long-term participation or high-intensity running as detrimental to the knees. Theoretically at least, running could have a role increasing the rate of OA progression. If this were true, all runners would get OA but this is not the case.