Information for Medical Professionals

Pseudotumours linked to hip resurfacing wear

Pseudotumours have been directly linked to wear and tear in metal-on-metal hip resurfacing arthroplasty, it has been claimed.

According to research published in the Journal of Bone and Joint Surgery, "our findings are the first direct evidence that pseudotumour is associated with increased wear at the metal-on-metal articulation".

"Furthermore, edge-loading with the loss of fluid-film lubrication may be an important mechanism of generation of wear in patients with a pseudotumour," they added.

Pseudotumours, which are the presence of soft-tissue masses following hip arthroplasty, have long been thought to be associated with blood metal ion concentrations.

"We found that the implant group with pseudotumours had a significantly higher rate of median linear wear of the femoral component," the researchers noted.

According to earlier research published in the same journal, shoulder arthroplasty revision carried out because of infections are more likely to result in complications that those carried out because of wear and tear.

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