DEAR DOCTOR K: My 12-year-old daughter has been doing gymnastics for years. Lately she's complained about pain in her knee. Her doctor says it's Osgood-Schlatter disease. How serious is this?
DEAR READER: This is a case where the name makes the condition sound worse than it is. Osgood-Schlatter disease is a common, temporary condition. It causes knee pain in older children and teenagers, especially those who play sports. About 20 percent of kids who play sports develop this condition. It starts when a kid's growth spurt starts, and major symptoms typically go away at the end of a teenager's growth spurt.