35-201
Aflojamiento de los cotilos roscados en las prótesis de cadera
Threaded cups loosening in total hip arthroplaty
J. VAQUERO MARTIN SERVICIO DE CIRUGÍA ORTOPÉDICA Y TRAUMATOLOGÍA. HOSPITAL GENERAL UNIVERSITARIO GREGORIO MARAÑON. MADRID.
Recepción:
15/09/2008
Aceptación:
15/09/2008
Publicación:
15/09/2008
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Resumen (ES)
We report our long-term results using a threaded
acetabular cup (Lord, Howmedica) in 145 hips with a followup
longre than 10 years. Ten patients died during this period
of time (12 cups) and we have reviewed 65 implants with a
mean age at operation of 60 years. The clinical results according
to Merle d'Aubigne score, showed that the hip is still
pain free, but there was a loss in walking ability of 0,6 points
(p<0,001). Forteen cups were revised for aseptic loosening
(21%) and revision was pending at the most recent follow-up
examination in additional two cups.The overall percentage of
simptomatic migration was 24%. We conclude that long
term stability of thraded cups is not warranted and different
factors can influence the revision rate (design, biomechanic
and technical factors), indicating that further use of these
acetabular components cannot be recommended.
acetabular cup (Lord, Howmedica) in 145 hips with a followup
longre than 10 years. Ten patients died during this period
of time (12 cups) and we have reviewed 65 implants with a
mean age at operation of 60 years. The clinical results according
to Merle d'Aubigne score, showed that the hip is still
pain free, but there was a loss in walking ability of 0,6 points
(p<0,001). Forteen cups were revised for aseptic loosening
(21%) and revision was pending at the most recent follow-up
examination in additional two cups.The overall percentage of
simptomatic migration was 24%. We conclude that long
term stability of thraded cups is not warranted and different
factors can influence the revision rate (design, biomechanic
and technical factors), indicating that further use of these
acetabular components cannot be recommended.
Palabras clave (ES):
Complicaciones
Resultados
Artroplastia
total
Cotilo
roscado
Acetábulo
Aflojamiento
Cadera
Prótesis
Resumen (EN)
We report our long-term results using a threaded
acetabular cup (Lord, Howmedica) in 145 hips with a followup
longre than 10 years. Ten patients died during this period
of time (12 cups) and we have reviewed 65 implants with a
mean age at operation of 60 years. The clinical results according
to Merle d'Aubigne score, showed that the hip is still
pain free, but there was a loss in walking ability of 0,6 points
(p<0,001). Forteen cups were revised for aseptic loosening
(21%) and revision was pending at the most recent follow-up
examination in additional two cups.The overall percentage of
simptomatic migration was 24%. We conclude that long
term stability of thraded cups is not warranted and different
factors can influence the revision rate (design, biomechanic
and technical factors), indicating that further use of these
acetabular components cannot be recommended.
acetabular cup (Lord, Howmedica) in 145 hips with a followup
longre than 10 years. Ten patients died during this period
of time (12 cups) and we have reviewed 65 implants with a
mean age at operation of 60 years. The clinical results according
to Merle d'Aubigne score, showed that the hip is still
pain free, but there was a loss in walking ability of 0,6 points
(p<0,001). Forteen cups were revised for aseptic loosening
(21%) and revision was pending at the most recent follow-up
examination in additional two cups.The overall percentage of
simptomatic migration was 24%. We conclude that long
term stability of thraded cups is not warranted and different
factors can influence the revision rate (design, biomechanic
and technical factors), indicating that further use of these
acetabular components cannot be recommended.
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