Sogacot Sociedad Gallega de Cirugía Ortopédica y Traumatología
«Estudio por simulador de la articulación de cadera de la articulación conformada por metal-metal: Part I: Papel de los materiales.»
Duncan Dowson, DSc * [MEDLINE LOOKUP] Cath Hardaker, MSc [MEDLINE LOOKUP] Magnus Flett, MSc [MEDLINE LOOKUP] Graham H. Isaac, PhD * [MEDLINE LOOKUP]
Abstract
The use of metal-on-metal low-wearing bearings has promoted great interest in the factors determining the volume of wear debris generated in such joints, including the developing surface replacement alternatives. Twenty-six pairs of low- and high-carbon components in wrought or cast form of 36 mm nominal diameter and exhibiting similar clearances were studied over 5 million test cycles in a 10-station hip joint simulator. Low-carbon cast materials exhibited higher wear than high-carbon cast or wrought materials. Little difference was found in the running-in wear volumes generated by high-carbon wrought or cast materials, but the wrought material exhibited a slight advantage at the smallest diametral clearance considered of 105 µm. Volumetric wear appeared to decrease as the diametral clearance decreased.
The Journal of Arthroplasty. December 2004, Supplement Volume 19 Number 8.<7I<