1. Run on an even, firm surface to reduce knee stress
  2. Even expensive trainers get worn out; replace your running shoes frequently
  3. Run regularly and make only gradual increases to running distance or intensity
  4. Leave diagnosis of running problems to a doctor with a background in sports physiology, not the guy in the shoe shop. Proper diagnosis will involve taking a history, a physical examination, and investigations such as x-rays and gait testing.
  5. Follow up with treatment, such as orthotics and physiotherapy, to help you fully recover.