Investigations on the wear behaviour of the temporary XXXX -based hip Spacer-G.

@entity4625 @entity281 @entity1 @entity3356
Total hip replacement has become one of the most successful orthopaedic procedures. However, complications due to @entity281 may give serious problems and have devastating consequences for the hip implant. The use of a temporary three-dimensional polymethylmethacrylate ( @entity4625 ) cement spacer may be an alternative to solve @entity281 in hip implants, improving the lives of @entity1 awaiting reimplantation. In order to evaluate their wear behaviour, five @entity4625 Spacer-G femoral heads were tested against five post-mortem pelves in a hip joint simulator with bovine calf serum as lubricant. The surface of the worn spacers was characterized by scanning electron microscopy (SEM) analysis; all the samples revealed a similar morphology, showing areas characterized by different degrees of wear. Particle debris was isolated from the lubricant and @entity4625 particles and bone fractions were quantified. The amount of debris was found to be higher than where no-temporary prostheses were used. However, this result is acceptable since @entity3356 is removed by lavage irrigation when the Spacer-G is explanted. On the basis of these data, it is considered that the use of the cement Spacer-G could be a promising approach to the treatment of complicated @entity281 of the hip joint. Therefore, Spacer-G is worthy of further research.
