37-210
Remodelación ósea en artroplastia total de cadera. Estudio con elementos finitos de la influencia del diseño
Periprosthetic bone remodelling. A finite element study of the influence of the implant design
BELÉN SERAL GARCÍA*, JOSÉ MANUEL GARCÍA**, MANUEL DOBLARE CASTELLANO**, FERNANDO SERAL IÑIGO*. *SERVICIO DE TRAUMATOLOGÍA Y CIRUGÍA ORTOPÉDICA. HOSPITAL CLÍNICO UNIVERSITARIO. **DEPARTAMENTO DE ESTRUCTURAS, FORMAS Y MEDIOS CONTÍNUOS. CENTRO POLITÉCNICO SUPERIOR. UNIVERSIDAD DE ZARAGOZA.
Recepción:
16/09/2008
Aceptación:
16/09/2008
Publicación:
16/09/2008
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Resumen (ES)
Remodelling of periprosthetic femoral bone after
total hip arthroplasty is being studied extensively. Finite element
analysis and computer-simulated remodelling theory
have predicted that femoral bone-mineral density decreases
after total hip arthroplasty. There is an important controversy
about the clinical consequences of bone remodelling. It could
decrease the bone strength, produce a cement mantle fracture,
an [aseptic loosening of the implant, or a periprosthetic
fracture. So that it could be decline the survival of the hip prothesis.
The status of periprosthetic bone stock is an important
concern when revision total hip arthroplasty is undertaken.
This study has been conducted to evaluate the periprosthetic
bone-mineral density following primary total hip arthroplasty
by finite elements analysis and computer simulation. We have
compared two cemented stems with different designs: Exeter
(Howmedica International) and SHP (Biomet International)
to study the phenomenon of femoral stress-shielding. We
have found that with the best mechanical conditions and with
the same materials, the prothesis design determined a different
periprosthetic bone remodelling.
total hip arthroplasty is being studied extensively. Finite element
analysis and computer-simulated remodelling theory
have predicted that femoral bone-mineral density decreases
after total hip arthroplasty. There is an important controversy
about the clinical consequences of bone remodelling. It could
decrease the bone strength, produce a cement mantle fracture,
an [aseptic loosening of the implant, or a periprosthetic
fracture. So that it could be decline the survival of the hip prothesis.
The status of periprosthetic bone stock is an important
concern when revision total hip arthroplasty is undertaken.
This study has been conducted to evaluate the periprosthetic
bone-mineral density following primary total hip arthroplasty
by finite elements analysis and computer simulation. We have
compared two cemented stems with different designs: Exeter
(Howmedica International) and SHP (Biomet International)
to study the phenomenon of femoral stress-shielding. We
have found that with the best mechanical conditions and with
the same materials, the prothesis design determined a different
periprosthetic bone remodelling.
Palabras clave (ES):
finitos
Cadera
Prótesis
Artroplastia
total
Remodelación
Ósea
Elementos
Resumen (EN)
Remodelling of periprosthetic femoral bone after
total hip arthroplasty is being studied extensively. Finite element
analysis and computer-simulated remodelling theory
have predicted that femoral bone-mineral density decreases
after total hip arthroplasty. There is an important controversy
about the clinical consequences of bone remodelling. It could
decrease the bone strength, produce a cement mantle fracture,
an [aseptic loosening of the implant, or a periprosthetic
fracture. So that it could be decline the survival of the hip prothesis.
The status of periprosthetic bone stock is an important
concern when revision total hip arthroplasty is undertaken.
This study has been conducted to evaluate the periprosthetic
bone-mineral density following primary total hip arthroplasty
by finite elements analysis and computer simulation. We have
compared two cemented stems with different designs: Exeter
(Howmedica International) and SHP (Biomet International)
to study the phenomenon of femoral stress-shielding. We
have found that with the best mechanical conditions and with
the same materials, the prothesis design determined a different
periprosthetic bone remodelling.
total hip arthroplasty is being studied extensively. Finite element
analysis and computer-simulated remodelling theory
have predicted that femoral bone-mineral density decreases
after total hip arthroplasty. There is an important controversy
about the clinical consequences of bone remodelling. It could
decrease the bone strength, produce a cement mantle fracture,
an [aseptic loosening of the implant, or a periprosthetic
fracture. So that it could be decline the survival of the hip prothesis.
The status of periprosthetic bone stock is an important
concern when revision total hip arthroplasty is undertaken.
This study has been conducted to evaluate the periprosthetic
bone-mineral density following primary total hip arthroplasty
by finite elements analysis and computer simulation. We have
compared two cemented stems with different designs: Exeter
(Howmedica International) and SHP (Biomet International)
to study the phenomenon of femoral stress-shielding. We
have found that with the best mechanical conditions and with
the same materials, the prothesis design determined a different
periprosthetic bone remodelling.
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