The Facts
Each year, about 1 in every 25 people will seek medical help for a "sports" injury, but not all of those injuries are sustained while playing sports. Any repetitive physical activity, even walking, can injure muscles and joints.
People who participate in sports are more likely than others of the same age to have muscle and tendon injuries and bone fractures. This certainly doesn't mean you should avoid sports - the health benefits far outweigh the cost in terms of sports injuries.