If your knee hurts when you walk, there can be several possible reasons. Sometimes the problem develops after an injury. In other cases, knee pain comes on gradually without an obvious cause. Common causes include irritation around the kneecap, osteoarthritis, tendon problems, meniscus injuries, and muscle weakness or imbalance. Problems involving the spine, hip, ankle, or foot can also change how forces travel through the knee when you walk. The location of your pain, when it occurs, and … [Read more...]