Continued Stabilization of a Cementless 3D-Printed Total Knee Arthroplasty: Five-Year Results of a Randomized Controlled Trial Using Radiostereometric Analysis.

Este estudio ha sido identificado como potencialmente de alto impacto. La métrica de alto impacto de OE, basada en la inteligencia artificial, estima la influencia que puede tener un artículo integrando señales procedentes tanto de la revista en la que se publica como del contenido científico del propio artículo. Desarrollado mediante el procesamiento del lenguaje natural más avanzado, el modelo de Alto Impacto de OE predice con mayor precisión el futuro rendimiento de las citas de un estudio que el factor de impacto de la revista por sí solo. Esto permite reconocer antes las investigaciones clínicamente significativas y ayuda a los lectores a centrarse en los artículos con más probabilidades de configurar la práctica futura.

Resumen del estudio

Seventy-two patients with knee osteoarthritis were randomized to receive a cementless 3D-printed cruciate-retaining tibial component (n=36) or a cemented cruciate-retaining tibial component (n=36). The primary outcome was maximum total point motion (MTPM) of the tibial component at 5 years. Secondary outcomes included progression of migration between 2 and 5 years, the proportion of continuously migrating implants, and patient-reported outcomes (KSS, KOOS, FJS). Follow-up assessments were performed at baseline, 3 months, 1, 2, and 5 years. Overall, the results revealed no significant difference in mean MTPM between cementless and cemented groups at 5 years. Progression of migration occurred in the cemented group beyond 2 years, whereas the cementless implants stabilized after early migration. Clinical outcomes were comparable between groups. These findings suggest that cementless 3D-printed tibial components achieve stable fixation after an initial settling phase, performing as well as cemented implants over 5 years.