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Painful resurfacing


The problem of painful hip resurfacing has increasingly been in the national news. Since the 1990’s there has been a significant increase in the number of metal-on-metal hip resurfacings being carried out in the UK. This type of implant was developed in Birmingham and still remains the market leader. It was developed on the basis that it was an ideal implant to use in younger patients, as it conserved bone on the thigh bone side and the large head gave greater stability. However, as more and more implants have been implanted and other companies have developed their own versions, which had different geometries, problems have emerged. It has become clear that a minority of patients will develop soft-tissue reactions due to the production of metal debris which can lead to a painful resurfacing. It seems to be more common in those with smaller femoral head sizes. It is currently only recommended in males under the age of 55 and is not carried out by Professor Fehily due to these problems. Following multiple reports of problems with these implants, the numbers being implanted in the UK have dropped significantly.

Problems have also emerged with implants where there is a large metal head on a stem. Recent evidence has shown that these implants (which were implanted because the surgeons felt that they were more reliable than the resurfacing implants) may actually be doing worse than the resurfacing ones. It is thought that this is due to wear at the junction between the head and the stem.

Patients who do develop problems will usually be within 5 years of their surgery. They will have a deep seated pain. There may or may not be a squeak as the metal components rub against each other.

Plain x-rays may show that the cup was mal-positioned and more vertical then recommended. However problems can occur even in implants that have been well positioned. On the x-ray, there is usually no evidence of loosening and no indication of the soft-tissue damage that may be present.

See our latest blog on metal-on-metal hip replacements…click HERE

The Manchester Hip Clinic is committed to helping all kinds of people with hip problems to be free from pain and often to resume near-normal levels of physical activity – even those who may have thought that such relief would never be possible.

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