Developmental dysplasia of the hipDefinition: Developmental
dysplasia of the hip (DDH) is a dislocation of the hip joint
that is present at birth. The condition is found in babies or
young children. Developmental dislocation of the hip joint;
Developmental hip dysplasia; DDH; Congenital dysplasia of the
hip; Congenital dislocation of the hip; CDH Causes, incidence,
and risk factors: The hip is a ball and socket joint. The ball,
called the femoral head, forms the top part of the thigh bone
(femur) and the socket (acetabulum) forms in the pelvis. The hip
may be all the way out of the joint or the socket may be a
little shallow. One or both hips may be involved. The cause is
unknown, but genetic factors may play a role. Low levels of
amniotic fluid in the womb during pregnancy can increase a
baby's risk of DDH. Other risk factors include: - Being the
first child - Being female - Breech delivery - Family history of
the disorder DDH occurs in about 1 out of 1,000 births. There
may be no symptoms. Symptoms that may