During activities that involve a lot of running, jumping and bending — such as soccer, basketball, volleyball and ballet — your child's thigh muscles (quadriceps) pull on the tendon that connects the kneecap to the shinbone.
This repeated stress can cause the tendon to pull away from the shinbone a bit, resulting in the pain and swelling associated with Osgood-Schlatter disease. In some cases, your child's body may try to close that gap with new bone growth, which can result in a bony lump at that spot.
Feb. 28, 2014
- DeLee JC, et al. DeLee & Drez's Orthopaedic Sports Medicine: Principles and Practice. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2010. http://www.clinicalkey.com. Accessed Oct. 17, 2013.
- Ferri FF. Ferri's Clinical Advisor 2014: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2014. https://www.clinicalkey.com. Accessed Oct. 17, 2013.
- Waldman SD. Atlas of Common Pain Syndromes. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.clinicalkey.com. Accessed Oct. 17, 2013.
- Osgood-Schlatter disease (knee pain). American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=A00411. Accessed Oct. 17, 2013.
- Kienstra AJ, et al. Osgood-Schlatter disease (tibial tuberosity avulsion). http://www.uptodate.com/home. Accessed Oct. 17, 2013.
- Laskowski ER (expert opinion). Mayo Clinic, Rochester, Minn. Oct. 28, 2013.
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