Risk factors
By Mayo Clinic staffThe main risk factors for Osgood-Schlatter disease are age, sex and participation in sports.
Age
Osgood-Schlatter disease occurs during puberty's growth spurts. Age ranges differ by sex because girls experience puberty earlier than do boys. Osgood-Schlatter disease typically occurs in boys ages 13 to 14 and girls ages 11 to 12.
Sex
Osgood-Schlatter disease is more common in boys, but the gender gap is narrowing as more girls become involved with sports.
Sports
Osgood-Schlatter disease affects about 20 percent of the adolescents who participate in sports, as compared with only 5 percent of adolescents who don't participate in sports. The condition happens most often with sports that involve a lot of running, jumping and swift changes in direction. Examples include:
- Soccer
- Football
- Basketball
- Volleyball
- Gymnastics
- Figure skating
- Ballet
- Moutzouros V, et al. Osteochondroses. In. DeLee JC, et al. DeLee and Drez's Orthopaedic Sports Medicine. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2009. http://www.mdconsult.com/books/page.do?sid=1111724571&eid=4-u1.0-B978-1-4160-3143-7..00022-1--sc2&isbn=978-1-4160-3143-7&type=bookPage§ionEid=4-u1.0-B978-1-4160-3143-7..00022-1--s0125&uniqId=234606866-3. Accessed Feb. 1, 2011.
- Mercier LR. Osgood-Schlatter disease. In: Ferri FF. Ferri's Clinical Advisor 2011: Instant Diagnosis and Treatment. Philadelphia, Pa.: Mosby Elsevier; 2011. http://www.mdconsult.com/books/page.do?sid=1111724571&eid=4-u1.0-B978-0-323-05610-6..00024-X--sc0055&isbn=978-0-323-05610-6&type=bookPage§ionEid=4-u1.0-B978-0-323-05610-6..00024-X--sc0055&uniqId=234606866-3. Accessed Feb. 1, 2011.
- Kienstra AJ, et al. Osgood-Schlatter disease. http://www.uptodate.com/home/index.html. Accessed Feb. 1, 2011.
- Chang-Miller A (expert opinion). Mayo Clinic, Rochester, Minn. Feb. 6, 2011.


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