35-201
Historia natural del componente acetabular en la prótesis de Charnley. Factores de riesgo
Natural history of the acetabular cup in the Charniey prosthesis: Risk factors
E. GARCIA CIMBRELO DEPARTAMENTO DE CIRUGÍA ORTOPÉDICA, HOSPITAL "LA PAZ", MADRID.
Recepción:
15/09/2008
Aceptación:
15/09/2008
Publicación:
15/09/2008
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Resumen (ES)
Four hundred and fifty two Charniey cups were
assessed with a mean follow-up period of 20 years. Seventyfive
of them were loosen. Migration was observed in 21%, and
33% showed demarcation in the whole contour of the cup.
There was a statistically significant correlation between the
grade of initial demarcation and migration (p<0.0001). The mean
acetabular wear rate was 0,13 mm/year. Annual wear over 0,2
mm was related with an age under 50 years, and weight over
80 kg. Of the 75 loosened cups, 35 were diagnosed within 10
years of the operation (early loosening), and 40 after 10 years
(late loosening). Early loosening was related to poor acetabular
bone stock, with cup migration and pain as frequent findings.
Late loosening was related with acetabular wear of
more than 2-mm, with less incidence of migration and pain.
assessed with a mean follow-up period of 20 years. Seventyfive
of them were loosen. Migration was observed in 21%, and
33% showed demarcation in the whole contour of the cup.
There was a statistically significant correlation between the
grade of initial demarcation and migration (p<0.0001). The mean
acetabular wear rate was 0,13 mm/year. Annual wear over 0,2
mm was related with an age under 50 years, and weight over
80 kg. Of the 75 loosened cups, 35 were diagnosed within 10
years of the operation (early loosening), and 40 after 10 years
(late loosening). Early loosening was related to poor acetabular
bone stock, with cup migration and pain as frequent findings.
Late loosening was related with acetabular wear of
more than 2-mm, with less incidence of migration and pain.
Palabras clave (ES):
Cadera
Prótesis
Artroplastia
total
Acetábulo
Cotilo
Cementada
Charnley
Aflojamiento
Resultados
Resumen (EN)
Four hundred and fifty two Charniey cups were
assessed with a mean follow-up period of 20 years. Seventyfive
of them were loosen. Migration was observed in 21%, and
33% showed demarcation in the whole contour of the cup.
There was a statistically significant correlation between the
grade of initial demarcation and migration (p<0.0001). The mean
acetabular wear rate was 0,13 mm/year. Annual wear over 0,2
mm was related with an age under 50 years, and weight over
80 kg. Of the 75 loosened cups, 35 were diagnosed within 10
years of the operation (early loosening), and 40 after 10 years
(late loosening). Early loosening was related to poor acetabular
bone stock, with cup migration and pain as frequent findings.
Late loosening was related with acetabular wear of
more than 2-mm, with less incidence of migration and pain.
assessed with a mean follow-up period of 20 years. Seventyfive
of them were loosen. Migration was observed in 21%, and
33% showed demarcation in the whole contour of the cup.
There was a statistically significant correlation between the
grade of initial demarcation and migration (p<0.0001). The mean
acetabular wear rate was 0,13 mm/year. Annual wear over 0,2
mm was related with an age under 50 years, and weight over
80 kg. Of the 75 loosened cups, 35 were diagnosed within 10
years of the operation (early loosening), and 40 after 10 years
(late loosening). Early loosening was related to poor acetabular
bone stock, with cup migration and pain as frequent findings.
Late loosening was related with acetabular wear of
more than 2-mm, with less incidence of migration and pain.
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