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 â One of Canadaâs Unique Provinces! Ontario is a unique Canadian province, located in southeastern Canada between the provinces of Manitoba and Quebec and immediately north of the states of New York, Pennsylvania, Ohio, Michigan and Minnesota in the United States. Ontario is the leader for Canadaâs manufacturing industry and does a great deal of business (particularly related to the auto industry) with the US state of Michigan (just across the border to the south); 2  The capital of Canada (Ottawa, population 870,250) is located in Ontario.