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Hip resurfacing arthroplasty is surgery that replaces the
damaged outer surfaces of the femoral head found at the top of the thighbone
and, if necessary, the cup-shaped socket where the thighbone meets the pelvis
in the hip joint. This surgery was done in the 1970s. But its use decreased,
because the parts used to replace the joint surfaces did not hold up well. Now,
doctors are using new materials, and the procedure is gaining
People younger than about age 55 who have hip
osteoarthritis have been difficult to help with standard hip replacements. They
have many years of activity ahead of them and put a lot of stress on their
replaced hip joint. So their hip replacements often need to be redone a few
years after the original surgery. These later surgeries are usually less
successful than the original hip replacements.
removes less bone than a hip replacement and maintains a better ball and socket
joint. The chances of hip dislocation are less than with hip replacement. And
people usually find the hip eventually feels normal after the surgery. Also, if
the hip resurfacing parts eventually need to be replaced, there is enough bone
remaining to do a standard hip replacement.
One study shows that
the success rate of hip resurfacing in people younger than 55 is nearly 100%
for the first few years after surgery, but long-term studies (greater than
about 8 years) are not yet available. People in this hip resurfacing study were
not advised to change their jobs or lifestyles in the long term. None changed
their jobs, including those involved in heavy labor, and most returned to
recreation and sports.1 One large study suggests that
results of hip resurfacing are good. But the risk of needing the surgery redone
is a little higher than with a standard hip replacement.2
Daniel J, et al. (2004). Metal-on-metal resurfacing of
the hip in patients under the age of 55 years with osteoarthritis.
Journal of Bone and Joint Surgery, 86-B(2):
Sibanda N, et al. (2008). Revision rates after primary
hip and knee replacement in England between 2003 and 2006. Public Library of Science Medicine, 5(9): 1398–1408.
April 8, 2011
Anne C. Poinier, MD - Internal Medicine & Stanford M. Shoor, MD - Rheumatology
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