Accident,
injury and age can damage the hip, limiting its flexibility and making movement
painful. The hip joint is basically
a large ball-and-socket joint composed of two parts: the head of the thighbone,
or femur; and the acetabulum, a cup-shaped bone in the pelvis. During hip replacement
surgery, damaged portions of the hip are replaced with smooth, durable artificial
surfaces to allow the joint to function properly.
There are two types of hip replacement surgeries: total
hip replacement and hip resurfacing.
An orthopaedic surgeon (a physician who specializes in joint and bone problems)
will advise you about which treatment is right for you based on your specific
case history.
Total Hip Replacement
During total hip replacement, also known as hip arthroplasty, both parts of the
hip joint are removed and replaced. Usually, a high-density plastic cup replaces
the hip socket, a metal ball replaces the femoral head, and a metal stem is inserted
to connect the ball with the bone shaft.
to view an animation of a
total hip replacement
click
here.
Total hip replacement is usually performed because of an arthritic condition,
especially osteoarthritis.
An orthopaedic surgeon may also recommend total hip replacement in the case of
avascular necrosis, a condition in which the bone of the ball portion of the
hip joint dies. A severe hip fracture or dislocation (often caused by a fall)
may also require total hip replacement.
Most total hip replacement candidates are older than 55. For younger patients,
partial hip resurfacing may be a viable solution for alleviating chronic hip
pain.
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| Osteoarthritic Hip |
Necrosis Hip |
Rheumatoid Hip |
Traumatic Hip |
In evaluating total hip replacement, your surgeon will discuss several options
with you, including:
-
Incision Type - Your surgeon may choose a minimally
invasive procedure or one large incision;
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Hardware - Based on your case history, your surgeon
may recommend a specific design or material (metal or ceramic) for the new
hip; and
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Cement or cement-less - Depending on your lifestyle,
your surgeon may decide to use a cemented or un-cemented prosthesis. Without
cement, the bone has a better chance of growing into the roughened hardware.
Younger patients are often candidates for this option.
For more information about Wright's total hip replacement products, click
here.