Periacetabular osteotomy (PAO) is a surgical treatment for hip dysplasia which preserves and improves the function of the patient’s own hip joint rather than replacing it with an artificial one.

The goal of the PAO is to reduce or eliminate pain, restore function, and maximize the functional life of the dysplastic hip.

PAO is designed to correct the major primary mechanical problems in acetabular dysplasia. These problems include excessive pressure of the femoral head on the rim of the acetabulum and instability of the femoral head within the acetabulum.

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