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 the most populous province in Canada with 12,851,821 residents as of 2011 and is third-largest in land area at approximately 909,000 km 2 (351,000 sq mi).Ontario's 444 municipalities cover only 7001170000000000000â  17% of the province's land mass yet are home to 7001990000000000000â  99% of its population.ntario is the most populous province in Canada with 12,851,821 residents as of 2011 and is third-largest in land area at approximately 909,000 km 2 (351,000 sq mi).