Diseases and Conditions

Osgood-Schlatter disease

Risk factors

The main risk factors for Osgood-Schlatter disease are:

  • Age. Osgood-Schlatter disease occurs during puberty's growth spurts. Age ranges differ by sex because girls enter puberty earlier than do boys. Osgood-Schlatter disease typically occurs in boys ages 12 to 14 and girls ages 10 to 13.
  • Sex. Osgood-Schlatter disease is more common in boys, but the gender gap is narrowing as more girls become involved with sports.
  • Sports. The condition happens most often with sports that involve running, jumping and swift changes in direction.
  • Flexibility. Tightness in the quadriceps muscles can increase the pull of the kneecap's tendon on the growth plate at the top of the shinbone.