Experimental model of posterolateral spinal arthrodesis in sheep. Part 1. Experimental procedures and results with autologous bone graft.
Spine (Phila Pa 1976)
; 19(24): 2791-7, 1994 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-7899981
ABSTRACT
OBJECTIVES:
The authors evaluated the reliability in obtaining a posterolateral spinal arthrodesis (PSA) with autologous bone graft. SUMMARY OF BACKGROUND DATA Posterolateral spinal arthrodesis using autogenous cancellous bone graft is the most simple and efficient technique to get a spinal graft. No extensive biomechanical study of PSA is available. Thus, an experimental model of PSA is needed.METHODS:
Eleven sheep underwent lumbar autologous bone grafts and Cotrel-Dubousset instrumentations, and four sheep were used as controls. Sacrifice and biomechanical evaluation of the lumbar spines were performed after 1 year.RESULTS:
All grafts appeared continuous. A large decrease of flexibility (in rotation and in translation) was found in grafted spines in every direction. Failure in extension occurred at a mean value of 35.26 +/- 3.71 Nm.CONCLUSION:
A constant and homogenous PSA appears to be obtained in sheep under conditions close to the human surgery.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fusão Vertebral
/
Transplante Ósseo
Limite:
Animals
Idioma:
En
Ano de publicação:
1994
Tipo de documento:
Article