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:

  • Position of the legs may differ (dislocated hip may cause leg on that side to turn outwards)

    Position of the legs may differ (dislocated hip may cause leg on that side to turn outwards)

  • Restricted movement on the side of hip dislocation

    Restricted movement on the side of hip dislocation

  • The leg may appear shorter on the side where hip is dislocated

    The leg may appear shorter on the side where hip is dislocated

  • Skin folds of fat on the thigh or buttocks may appear uneven

    Skin folds of fat on the thigh or buttocks may appear uneven

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.

A total hip replacement is one of the most successful operations that orthopedic surgeons perform.  A hip replacement is an elective surgery, which means patients decide if and when to have their hip replaced. As a physician, I never tell patients they have to have a hip replacement surgery, but many times surgery may offer the only possibility for pain relief. Although the surgery is elective, it is covered by most insurance companies; however, depending on your policy you maybe required to make a small co-payment. My philosophy is to give my patients as much information as they need to make informed decisions regarding their health and hip pain and then treat their hip pain according to their wishes.


A hip joint is basically a ball and socket joint.  A hip replacement involves removing the ball (femoral head) and replacing it with a metal prosthetic ball. The femoral prosthesis is inserted into the hollow part of the femoral shaft. The socket of the pelvis is machined into a hemisphere and a metal hemisphere is inserted into the socket. The new metal ball and new metal socket form the new hip joint and allow the same and often times more motion than the native hip joint. The femoral and acetabular prosthesis are attached to your bones by creating a space in the bone that is slightly smaller than the metal prosthesis and then pressing the metal prosthesis into this tight space. Occasionally, the metal prosthesis is attached to the bone with bone cement. The parts are made of stainless steel, titanium, ceramic and/or polyethylene. I typically make an incision about 3-4 inches long for a hip replacement.


The purpose of this web page is to educate patients about the major aspects of hip replacement surgery. Many studies have shown that an informed patient will have less surprises and more satisfaction with their surgery. I do not intend to scare people away from getting their hip pain treated. Although the following information is a reasonable overview of what I consider the major aspects of hip surgery, it is not a substitute for a clinical consultation where I can directly answer your questions. If you would like more information, please schedule an appointment to see me.

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.

The common symptoms of hip dysplasia include:

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