Randall Peeters was the eighth person in the world to climb the highest peaks on each continent, known as the seven summits. He is among an even more elite group to have also completed expeditions to the North Pole and South Pole. Many of these accomplishments came after experiencing numerous knee injuries and being diagnosed with severe degenerative osteoarthritis. Nearly two decades ago, Randall was told he needed knee replacement surgery. Read more about his amazing story here.