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Vol. 15. Issue 3.
Pages 270-278 (January 2004)
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Vol. 15. Issue 3.
Pages 270-278 (January 2004)
Estudio comparativo de la artrodesis cervical con injerto óseo roscado e implante de titanio
Anterior cervical interbody fusion with treathed cylindrical bone versus bak-cace: a comparative study
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L.F. Porras-Estrada
, L.F. Ugarriza-Echebarrieta, L. Lorenzana-Honrado, J.A. Rodríguez-Sánchez, L.M. García-Yagüe, I. Fernández-Portales, L. Gómez-Perals, J.M. Cabezudo
Servicio de Neurocirugía. Hospital Universitario Infanta Cristina. Badajoz
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Resumen

Presentamos los resultados de un estudio comparativo prospectivo que hemos llevado a cabo en 44 pacientes operados entre los años 1996 y 1997 que padecían de radiculopatía cervical o mielopatía compresiva por hernia discal o espondilosis.

Todos los pacientes fueron intervenidos mediante abordaje cervical anterolateral y tras la discectomía se les practicó una artrodesis intersomática, bien con injerto óseo roscado heterólogo (Unilab Surgibone®) o bien con implante de titanio (BAK-CR®).

Los pacientes fueron evaluados en el postoperatorio entre 2 y 5 años. El interés de nuestro estudio se centró en la valoración radiológica de ambos implantes. Se examinaron diversos parámetros como: desplazamientos del implante, altura intersomática, ángulo vertebral, valoración de la fusión, pseudoartrosis y efecto sobre niveles cervicales adyacentes.

Los resultados clínicos fueron buenos para ambos tipos de implante. La valoración radiológica fue superior para el implante roscado de titanio.

Palabras clave:
Artrodesis cervical
Injerto óseo roscado
Implante de titanio
Hernia discal cervical
Espondilosis cervical
Summary

The authors conducted a prospective and randomi-zed study in 44 consecutive patients requiring cervical interbody fusion following anterior cervical discectomy to compare the efficacy of heterologous threaded cylin-drical bone (Unilab Surgibone) versus titanium implant (Bak-C; Spine-Tech, Minneapolis).

The patients were evaluated between two and five years postoperatively and the objetives of the study were to assess the potential differences in implant shifting, interespace collapse, angulation, maintenance of cervical alignment and lordosis, and clinical and radiographic fusion succes rates between the two fusion substrates.

Clinical results were satisfactory with both types of implant. However the threaded cylindrical titanium implant was found to be superior to the heterologous threaded cylindrical bone as an interbody substrate after single -and multiple- level anterior cervical decompression procedures with respect to maintenance of cervical interspace height, interspace angulation and radiographic fusion succes rates.

Key words:
Interbody fusion
Cervical disk herniation
Cervical spondylosis
Threaded cylindrical bone
Titanium implant

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