Pain behind the Knees â Causes, Risk Factors and Treatment. An injury or blow to the back of the leg due to a fall or some other accident may lead to considerable pain in the posterior knee region. A sprain may lead to considerable pain, that may be accompanied by redness and swelling.
Ontario is a Province in Canada. There are no US states by that name. There is Ontario California stateside. Valerie Lee.
Ontario, Ohio. Ontario is a city in Richland County in the U.S. state of Ohio. It was founded in 1834 on the western edge of the Allegheny Plateau, just west of the city of Mansfield. After being incorporated in 1958, Ontario became a heavy manufacturing center because of the Erie Railroad line, and its proximity to Mansfield.