The Orthopaedic Center, P.A.
2112 F Street NW, Suite 305
Washington D.C. 20037
Phone: (202) 770-1447
Appointments: (202) 912-8480
Fax: (202) 912-8484
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Hip dysplasia is a condition which is seen in infants and young children as a result of developmental problems in the hip joint. The femur (thigh bone) partially or completely slips out of the hip socket causing dislocation at the hip joint. It is most common in first born baby with family history of the disorder. The exact cause for hip dysplasia is not known. Genetic factors play an important role in causing this birth defect.
The common symptoms of hip dysplasia include:
In normal hip, the head of the femur (thigh bone) fits well into the socket (acetabulum) whereas in hip dysplasia, the socket and femoral head are not congruent because of their abnormal development. Patients with hip dysplasia may have undergone one or more hip operations during their childhood which might have caused considerable skeletal changes and scarring of the soft tissues. Secondary osteoarthritis may develop later in life which may cause pain and stiffness in the hip. This is an indication for total hip replacement surgery. During this surgery, your surgeon enlarges and prepares the socket to receive the acetabular component. A bone graft may sometimes be placed to recreate the roof of defective hip socket.
Hip osteotomy or periacetabular osteotomy is the surgical procedure indicated in hip dysplasia and it involves cutting the bone around the acetabulum so as to fit the head of the femur bone into acetabular socket. This method was developed and performed by Professor Reinhold Ganz and therefore it is also called as Ganz osteotomy.
Ganz osteotomy is performed in children, adolescents and young adults in whom growth plate around the hip socket has been closed.
The technique involves exposure of the pelvic bone through smaller incisions. A skin incision is made and the underlying subcutaneous fat and muscles are retracted to expose the ilium. In Ganz osteotomy, five bone cuts are made in the pelvic bone around the socket. Then the pelvic bone along with the hip socket is rotated into a more stable, horizontal position of coverage on top of the femoral head so as to cover the femoral head in an adequate manner. Once the position is corrected, it is maintained with the help of 2 to 3 small cortical screws.