• Age. Water on the knee tends to happen more often in people older than age 55.
  • Sports participation. People who participate in sports that involve sudden changes of direction, such as basketball, are more likely to experience the types of knee injuries that cause water on the knee.
  • Obesity. Excess weight puts added stress on the knee joint, contributing to the wear-and-tear damage that may lead to water on the knee. This increases your risk of osteoarthritis, one of the more frequent causes of water on the knee.
June 16, 2012

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