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.
Sponsored Topics. Ontario is a town in the northwest corner of Wayne County, New York, United States. The population was 9,778 at the 2000 census. The town is named after the Great Lake on its northern border. The first settler was Freeman Hopkins who arrived in 1806.