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A periacetabular osteotomy (also known as a Ganz or Bernese osteotomy) is a surgical procedure used to treat and preserve hips affected by hip dysplasia. The procedure was developed by Prof. Reinhold Ganz and involves cutting the pelvis to reposition the acetabulum (hip socket) to achieve better coverage of the femoral head.


The periacetabular osteotomy procedure is a hip dysplasia treatment option for adults and children who have reached skeletal maturity.


The procedure begins with an incision over the pelvis to expose the ilium. Five cuts are made into the pelvic bone to separate the acetabulum. The cut pelvic bone and acetabulum are then repositioned to provide more adequate coverage of the femoral head. Once proper positioning is achieved, the osteotomy is held in place with small screws.

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