This condition is called hip dysplasia, or developmental dysplasia of the hip (DDH). Although hip dysplasia is usually present at birth or during early childhood, many people who have this condition ...

The second study focused on one woman discovered at Baga Gazriin Chuluu in Mongolia, who had bilateral hip dysplasia and lived during the transition into China's Iron Age over 2,500 years ago.

Born with bilateral hip dysplasia and later diagnosed with epilepsy, James has become a symbol of childhood resilience. "He was our normal baby," Lindsey recalls. "The only thing that really stood ...