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Mala calidad ósea o estructura de cadera como factores de riesgo que afectan la supervivencia de la artroplastia
S Kobayashi1, N Saito, H Horiuchi
1Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto, Japan. seneki@hsp.md.shinshu-u.ac.jp
Lancet (London, England)
|May 9, 2000
Resumen
El fracaso de la fijación aséptica en la artroplastia total de cadera (THA) está relacionado con la mala calidad y estructura ósea. La identificación de estos factores de riesgo, como la osteoartrosis atrófica y la geometría desfavorable del canal, es crucial para mejorar la durabilidad del THA.
Área de la Ciencia:
- La cirugía ortopédica es una cirugía ortopédica.
- Ciencia de los biomateriales ciencia de los biomateriales.
- Ingeniería médica Ingeniería médica.
Sus antecedentes:
- La falla de la fijación aséptica sigue siendo una complicación primaria a largo plazo después de la artroplastia total de cadera (THA).
- Las prótesis y técnicas existentes no abordan adecuadamente la mala calidad ósea y la estructura de la cadera.
- Este estudio investiga los factores de riesgo que contribuyen al fracaso de la fijación aséptica en THA.
Objetivo del estudio:
- Para identificar los factores de riesgo específicos asociados con el fracaso de la fijación aséptica después de la artroplastia total de cadera.
- Analizar los factores que contribuyen al aflojamiento del encaje y al fracaso de la fijación femoral.
- Investigar el desarrollo del desgaste rápido del polietileno en THA.
Principales métodos:
- Análisis multivariado de 405 artroplastias totales de cadera primarias de Charnley.
- Evaluación de las tasas de supervivencia e identificación de los factores de riesgo de fallas en la fijación aséptica.
- Investigación de los factores de riesgo para el desgaste rápido del polietileno (profundidad de penetración > o = 2 mm / año).
Principales resultados:
- La osteoartrosis atrófica y el rápido desgaste del polietileno son factores de riesgo para el aflojamiento del encaje.
- La geometría desfavorable del canal medular es un factor de riesgo para el fracaso de la fijación femoral.
- Las prótesis femorales Ortron 90 redujeron significativamente las tasas de desgaste rápido del polietileno.
Conclusiones:
- La mala calidad ósea (osteoartrosis atrófica) tiene un impacto en la supervivencia de la cavidad en THA.
- La estructura ósea deficiente (geometría desfavorable del canal) afecta la supervivencia de la prótesis femoral.
- Se necesitan más evaluaciones de estos factores e intervenciones biológicas para mejorar la longevidad de los THA.
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