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.
For other uses, see Ontario (disambiguation). Ontario is a town in the northwest corner of Wayne County, New York, United States. The population was 9,778 at the 2000 census, and 10,136 at the 2010 census. The town is named after the Great Lake on its northern border. The town has a hamlet (and census-designated place), also called Ontario.