1. Runner’s Knee (Patellofemoral Pain Syndrome) Runner’s knee is one of the most common injuries among runners. It occurs due to irritation of the cartilage under the kneecap, leading to pain around the knee. Causes include excessive training, improper running form, or weak thigh muscles. Prevention Tips: Strengthen the quadriceps and hip muscles. Avoid running on hard surfaces. ... https://ankle-brace.com/