The heat required to convert water at. boiling point to steam at the same. temperature is called âlatent heat.â The. unit of heat in common use is the Btu. which is the amount of heat required to. raise the temperature of one pound of. water 1Â°F at atmospheric pressure.
An overuse injury can occur when you take on too much physical activity too quickly.
Overuse injuries, or repetitive microtrauma, occasionally present with knee swelling. Important questions to ask include which recreational or occupational activity was involved, how quickly the swelling occurred or resolved, and if any self-treatment had been attempted. Systemic disorders often cause knee effusion.