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 is located on a major east-west transportation corridor that was originally known in the early 1900s as Ohio Market Route 3.. This route was chosen in 1913 to become part of the historic Lincoln Highway which was the first road across America, connecting New York City to San Francisco.