Knee Pain. What is in common?. Observe what?. One of the Most Running Injuries. Patellofemoral Pain Syndrome ("Runner's Knee"). Anatomy. Patellofemoral Pain.
Normally, the hyaline cartilage on the back surface of the patella is thicker than anywhere else in the body.
Problems with the cartilage on the back of the patella include softening, blistering, fissuring, erosion, and thinning.
These problems are collectively called chondromalaciapatella.