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Developmental Dysplasia of the Hip.

Last updated Wednesday, February 09, 2005

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Causes and effects

What causes developmental dysplasia of the hip?

The hip is a ball and socket joint. In developmental dysplasia of the hip, the socket (known as the acetabulum of the pelvis) is too shallow. This may result in uneven distribution of force across the hip. Alternatively, the socket may be so shallow that the ball (known as the head of the femur, or thigh-bone) can dislocate. In both cases, the result is initially a waddling gait, and eventually hip pain, stiffness, and arthritis.

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