14-Year-Old's Foot Replaced His Knee After Cancer Surgery

A teenager is learning to walk again after a surgery replaced his knee with his own foot. Jacob Bredenhof, 14, was devastated when he learned he had two osteosarcomas growing on his femur bone. Doctors thought his pain was caused by sports injuries since the teen was very active, but scans revealed the cancerous tumors were putting pressure on his bones and could have caused them to snap. InsideEdition.com's Mara Montalbano has more.