If the pain subsides with slow easy exercise, you may continue, but if it gets worse, stop the activity and rest. If it persists, see your podiatrist. One of the most common causes of runner's knee is excessive pronation, or rolling in and down, of the foot. Occasionally, rubber pads in the arch of the shoe will help. Shin splints, which painfully appear at the front and inside of the leg, are caused by running on hard surfaces, overstriding, muscle imbalance, or overuse.
Treatment includes changing running technique or insertion of an orthotic device in the shoe.