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Inicio Revista Española de Cirugía Ortopédica y Traumatología (English Edition) Influence of concentrated platelets on the reconstruction of cartilage defects i...
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Vol. 54. Issue 6.
Pages 378-382 (November - December 2010)
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Vol. 54. Issue 6.
Pages 378-382 (November - December 2010)
Original article
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Influence of concentrated platelets on the reconstruction of cartilage defects in the lamb knee joint
Influencia del concentrado de plaquetas sobre la reconstrucción de defectos de cartílago articular en la rodilla de cordero
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F. García-Álvareza,
Corresponding author
fegarcia@comz.org

Corresponding author.
, T. Castiellab, S. Vala, J. Gómez-Arruec, J.M. Grasad, A. Viloriac, E. Gómez-Barrenae
a Traumatology and Orthopaedic Surgery Department, “Lozano Blesa” University Hospital, Zaragoza, Spain
b Pathology Department, “Lozano Blesa” University Hospital, Zaragoza, Spain
c Area of Animal Medicine and Surgery, School of Veterinary Science, University of Zaragoza, Zaragoza, Spain
d Immunology Department, School of Health Sciences, University of Zaragoza, Huesca Campus, Huesca, Spain
e Traumatology and Orthopaedic Surgery, School of Medicine, Autonomous University of Madrid, Madrid, Spain
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Abstract
Objective

To study the influence of platelets on cartilage growth in articular defects in the sheep knee.

Material and methods

Male Rasa Aragonesa sheep (6 months) were operated under general anaesthesia. A 4mm diameter and 3mm deep defect was made in the femoral trochlea in both knees. The right knee defect was filled with platelet concentrate 5min after being activated with ClCa in group A (n=6), and similarly activated platelets + collagen scaffold in group B (n=6). Platelets were obtained by centrifuging 10ml arterial blood from the sheep prior to the surgical procedure. The left knee defect was not filled. The sheep were sacrificed 10 weeks after surgery. Macroscopic and microscopic studies were performed.

Results

In group A, hyaline cartilage was observed in the right knee defect at the end of the experiment in four cases. None of the defects of the left knees showed hyaline cartilage growth. In group B, hyaline cartilage was not observed in any right knee defect. However, in group B, all sheep showed better chondral cellularity and regeneration and lower fibrosis in the defects treated with platelets than in non-treated ones.

Conclusions

This technique for articular defect reconstruction with platelets has shown satisfactory results in our study. However, collagen scaffolds may decrease this positive effect.

Keywords:
Platelets
Articular defect
Cartilage
Knee
Resumen
Objetivo

Analizar el efecto de las plaquetas sobre el crecimiento de cartílago en los defectos articulares provocados en la rodilla ovina.

Material y método

Se provocó un defecto de 4mm de diámetro y 3mm de profundidad en la tróclea femoral de ambas rodillas en corderos macho de 6 meses de edad. La distribución de los grupos fue: grupo A (n=6): el defecto de la rodilla derecha se rellenó con concentrado de plaquetas 5min después de ser activado con ClCa. Grupo B (n=6): el defecto se rellenó con colágeno y plaquetas.

Las plaquetas se obtuvieron por centrifugación de 10ml de sangre arterial obtenida de cada animal antes de la cirugía. En los defectos de la rodilla izquierda no se administraron plaquetas. Las ovejas fueron sacrificadas 10 semanas después de la cirugía. Se realizaron estudios macro y microscópicos.

Resultados

En el grupo A, se observó cartílago hialino en 4 de los defectos de la rodilla derecha a las 10 semanas de la cirugía. Ninguno de los defectos de la rodilla izquierda mostró crecimiento de cartílago hialino. En el grupo B, no se observó cartílago hialino en nigún defecto. No obstante, todos los defectos presentaron mejor celularidad condral y menor fibrosis en los defectos tratados con plaquetas que en los no tratados.

Conclusiones

Esta técnica para la reconstrucción con plaquetas de defectos articulares de oveja ha mostrado en nuestro estudio resultados esperanzadores que empeoran combinadas con un andamiaje de colágeno.

Palabras clave:
Plaquetas
Defecto articular
Cartílago
Rodilla
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Copyright © 2010. Sociedad Española de Cirugía Ortopédica y Traumatología (SECOT)
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