Runners will come into see us for regular maintenance during their training months leading up to a marathon. One of the common issues that we see in our practice is something called runner's knee. Runner's Knee is typically pain that occurs on the lateral or outside of the knee. This can be caused by the Biceps Femoris pulling the the Tibia (lower leg) into rotation. When the Tibia rotates laterally it cause the knee to become misaligned which makes the joint not function well. An imbalanced joint will lead to poor mechanics which leads to pain and faulty movement patterns.