why do my joints hurt when i run
Introduction. Sudden pain in one of the knees is usually the result of overusing the knee or injuring it. In many cases, you don't need to see your GP. The knee joint is particularly vulnerable to damage and pain because it takes the full weight of your body and any extra force when you run or jump.ntroduction. Sudden pain in one of the knees is usually the result of overusing the knee or injuring it. In many cases, you don't need to see your GP. The knee joint is particularly vulnerable to damage and pain because it takes the full weight of your body and any extra force when you run or jump.