Valoración a medio-largo plazo de los cotilos de Mittelmeier
1996
This study was aimed at evaluating clinically and radiologically the results of 125
Mittelmeier cups implanted in our institution, with a mean follow-up of 8 years (5.5-14). The same
type of cup was used in the whole series, combined with two types of femoral stem from the
2
nd
and 3rd
generations. The results were satisfactory in 91 % of cases treated with the 3rd
generation
and 57% in those cases treated with the 2nd
generation of implants. Progressive inclination
and coverage were detected with both horizontal and vertical migration of the cups. No relationship
was found between clinical results and the displacements observed. In this series, migrations
of the cup were more frequent than those published by other authors. Horizontal and vertical
migratrion may be due to the difference between the coefficients of elasticity of ceramic and
bone. Cup migration did not imply poor results. In conclusion, the overall results obtained with
the Mittelmeier cups were satisfactory, in spite of migration. The clinical repercussion of cup migrations
was minimal.
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