The Effect of Risedronate on Posterior Lateral Spinal Fusion in a Rat Model
Journal of Korean Neurosurgical Society
;
: 45-51, 2009.
Artigo
em Inglês
| WPRIM
| ID: wpr-15436
ABSTRACT
OBJECTIVE:
To evaluate the potential effects of risedronate (RIS) which shows a higher anti-resorptive effect among bisphosphonates, after a posterolateral lumbar intertransverse process spinal fusion using both autograft and allograft in a rat model.METHODS:
A totoal of 28 Sprague-Dawley rats were randomized into 2 study groups. A posterolateral lumbar intertransverse process spinal fusion was peformed using both autograft and allograft in a rat model. Group I (control) received 0.1 mL of steril saline (placebo) and Group II (treatment) received risedronate, equivalent to human dose (10 microgram/kg/week) for 10-weeks period.RESULTS:
The fusion rates as determined by manual palpation were 69% in the group I and 46% in the group II (p = 0.251). According to radiographic score, the spinal segment was considered to be fused radiographically in 7 (53%) of the 13 controls and 9 (69%) of the 13 rats treated with RIS (p = 0.851). The mean histological scores were 5.69 +/- 0.13 and 3.84 +/- 0.43 for the control and treatment groups, respectively. There was a significant difference between the both groups (p = 0.001). The mean bone density of the fusion masses was 86.9 +/- 2.34 in the control group and 106.0 +/- 3.54 in the RIS treatment group. There was a statistical difference in mean bone densities of the fusion masses comparing the two groups (p = 0.001).CONCLUSION:
In this study, risedronate appears to delay bone fusion in a rat model. This occurs as a result of uncoupling the balanced osteoclastic and osteoblastic activity inherent to bone healing. These findings suggest that a discontinuation of risedronate postoperatively during acute fusion period may be warranted.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Osteoblastos
/
Osteoclastos
/
Palpação
/
Fusão Vertebral
/
Coluna Vertebral
/
Transplante Homólogo
/
Densidade Óssea
/
Ácido Etidrônico
/
Ratos Sprague-Dawley
/
Difosfonatos
Tipo de estudo:
Ensaio Clínico Controlado
/
Guia de Prática Clínica
/
Estudo prognóstico
Limite:
Animais
/
Humanos
Idioma:
Inglês
Revista:
Journal of Korean Neurosurgical Society
Ano de publicação:
2009
Tipo de documento:
Artigo
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