As the name implies, runner’s knee, also known as Chondromalacia patella or Patellofemoral pain syndrome is a common problem among runners. However, it may take place in athletes that are involved in activities requiring frequent knee bending, such as jumping, biking and even walking. It often causes an aching pain around your kneecap and hence the name, runner’s knee.Signs and symptoms Some common signs and symptoms of runner’s knee include:Pain around or behind your kneecap – this is most prominent where the kneecap and thighbone meetPain while bending the knee – this is common while walking, kneeling, running, sitting and squattingSwelling...