How can I prevent runner’s knee from reoccurring?

Runner’s knee is a common overuse injury, so it can recur unless you work to actively prevent it when you recover. Make sure your running shoes are appropriately supportive of your arches. If you are prone to overpronation, you might need orthotics or motion-control shoes to help moderate your gait. Exercises that build up your calves and hamstrings help with overpronation, too. Since the quad muscles in your thighs substantially impact knee stability, stretch them daily and work them to build their strength. Consider running on softer surfaces, too, at least for a time.