Developmental dysplasia of the hip (DDH) is a condition seen in infants and young children. It is also called hip dysplasia. In a normal hip joint, the ball of the femur (thigh bone) fits snugly ...

Hip dysplasia is when the ball and socket of your hip joint don’t fit together as they should. Usually, the ball-shaped end of your upper thigh bone (femur) fits neatly into a socket in your pelvis ...