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 Province in se Canada, bounded to the s by four of the Great Lakes (Superior, Huron, Erie, and Ontario) and the USA; the capital is Toronto. Other major cities include Ottawa, Hamilton, Windsor, and London. Ontario is Canada's most populous province.