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General Joint Surgery Information
Thumbs Up for Joint Replacement
Roger Emerson, Jr., MD
Total joint replacement is one of the great orthopaedic
surgical advances of this century. In this procedure, an orthopaedic
surgeon replaces an arthritic or damaged joint with an artificial
joint, called a prosthesis. In the United States alone, more
than 150,000 total joint replacements are performed each year
by orthopaedists.
The most frequent reason for performing a total joint replacement
is to relieve the pain and disability caused by severe osteoarthritis.
Osteoarthritis involves a wear-and-tear problem with bones and
cartilage (the rubbery, cushion-like material that surrounds
and protects the end of bones). The problem results from a gradual
break down of cartilage, occurring most often in the hips, spine,
knees, toes and fingers, the joints that you use most often.
Why does cartilage break down? There are several reasons.
First, direct injury to the joint due to sports or physical
labor can cause cartilage to break down. Hereditary conditions
such as defective cartilage, dislocated hips or bowlegs also
can cause cartilage to break down. Additionally, in some people,
certain chemicals in the body attack the cells that make up
cartilage.
When protective cartilage wears down, it softens and frays,
leaving the joints unprotected. This may lead to a thickening
of the bone ends, resulting in what are called spurs. Most people
feel deep aching soreness, or stiffness that is particularly
noticeable when they move. Sometimes these symptoms make it
difficult to move the joints, especially after long periods
of immobility.
Living with arthritis involves adjusting to and managing the
pain. Although there is no cure for osteoarthritis, there is
much one can do to alleviate the pain. Many people with osteoarthritis
rely upon a combination of exercise, minor lifestyle changes,
proper diet and medication. When these treatments fail the answer
for many patients is total joint replacement. Total joint replacement
is a surgical procedure where the damaged parts of the joint
are replaced with artificial materials.
The materials used in a total joint replacement are designed
to enable the joint to move in the same way as the normal joint.
These artificial components are generally made of a metal piece
that fits closely into a matching sturdy plastic partner piece.
If joint replacement is recommended, patients can expect significant
relief from pain often dramatically. Motion of the joint
will also improve. The extent of improvement will depend on
how stiff the joint was before the operation.
Many older persons can expect their total joint replacement
to last a lifetime. The artificial joint will give years of
pain-free living that would not have been possible otherwise.
Materials and surgical techniques are improving rapidly because
of the efforts of orthopaedists working with engineers and other
scientists. The future is promising for those who choose to
have a total joint replacement.
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