Desarrollo mecánico y experimental de un implante discal cervical flexible

Carlos Alvarez, Paul Lean, Rodolfo Rodríguez, Claudio Pacussich, Ainsworth Noriega, Erick Navarro

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)


Introduction: Cervical arthroplasty is a surgical procedure that involves the use of disc implants with the capacity of preserving segmental movement. It is a challenge for countries like ours to develop alternatives to the high costs of the aforementioned implants, with patented designs, feasible to manufacture, with biocompatibility, safety, and that simulates as much as possible the physiological cervical movements. Objectives: To develop the geometry and mechanics of a patented disc design elaborated with titanium ELI by additive manufacturing, as well as, to verify its compatibility with the physiology of cervical movements. Methods: The study design had three iterative stages: the first one was the development of the implant geometry and the finite-element study using international standards as a reference. In second place, studies of metallography, characterization of the material and fatigue tests of the implant were developed. Finally, a cadaverous animal model was used to confirm the compatibility of the implant with cervical movements. Results: The implants manufactured by forging or by additive manufacturing are compatible with international standards. 84 x-ray studies were performed on 18 pig necks. In 100% of the cervical columns of the pigs, the range in flexion was smaller than that of extension. There was a greater range of motion when two implants were used and when the implant was larger. Conclusions: The flexible cervical implant made by forging or a titanium-ELI additive manufacturing have promising results, because of that, an experimental use in patients, who needs cervical arthroplasty, could be considered.

Título traducido de la contribuciónMechanical and experimental development of a flexible cervical disc implant
Idioma originalEspañol
Páginas (desde-hasta)305-311
Número de páginas7
PublicaciónAnales de la Facultad de Medicina
EstadoPublicada - jul. 2019

Palabras clave

  • Animal Structures
  • Arthroplasty, Replacement
  • Materials Testing
  • Models, Animal (source: MeSH NLM)
  • Prostheses and Implants
  • Prosthesis Design


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