The large quadriceps muscle of the front of the thigh attaches to a bump over the front of the shin bone. When this large muscle contracts, it pulls on this tendon. Over time, repetitive pulling, combined with the growth taking place in the bone, causes irritation of the growth plate. Osgood-Schlatter is most common in active adolescents.
Treatment of Osgood-Schlatter is best accomplished with rest. By avoiding irritating activities, the inflammation usually subsides without other treatment. Occasionally, a knee brace or even a cast is used, but this is usually not necessary.