Strength and stiffness of repaired tendons

Paleczny, A.M.; Rojo Pérez, Francisco Javier; Atienza Riera, José Miguel; Bourges, Jean Yves y Guinea Tortuero, Gustavo V. (2011). Strength and stiffness of repaired tendons. En: "XXVIII Encuentro del Grupo Español de Fractura", 06/04/2011 - 08/04/2011, Gijón, España. ISBN ISSN 0213-3725.


Título: Strength and stiffness of repaired tendons
  • Paleczny, A.M.
  • Rojo Pérez, Francisco Javier
  • Atienza Riera, José Miguel
  • Bourges, Jean Yves
  • Guinea Tortuero, Gustavo V.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: XXVIII Encuentro del Grupo Español de Fractura
Fechas del Evento: 06/04/2011 - 08/04/2011
Lugar del Evento: Gijón, España
Título del Libro: Anales de Mecánica de Fractura 28, 2011
Fecha: 2011
ISBN: ISSN 0213-3725
Volumen: 1
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Rotator cuff tears of the shoulder are a common cause of pain and disability. Although surgery is frequently beneficial, re-tearing of the tendons is likely to re-occur. In many cases even if the reparation is successful it will still generate discomfort, problems with mobility, as well as a sharp pain. This project is funded in the cooperation with the Hospital Clinico San Carlos de Madrid. The purpose of this work is to analyze the effect of the surgical repair and the application of different therapies, including mesenchymal stem cell therapy on the biomechanical properties (strength and stiffness) of the repaired tendon. An animal model of rotator cuff tendon reparations has been developed on laboratory rats.To obtain the mechanical response of the healthy and repaired tendons, it was necessary to develop an experimental set up to reproduce the in-vivo working conditions of the tendons (37 ºC, immersed in physiological serum), and especially the load transfer. The biomechanical properties (maximum load and stiffness) have been measured in healthy and repaired tendons. A total of 70 rats are used in this particular study. It has been found that the repaired tendon is stronger than the original on. However, the repaired tendons demonstrate less flexibility than the healthy (original) ones prior to the damage

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