Abstract
The capability of a single i.m. injection of betamethasone (Celeston Chronodose®) to modulate a post-operative course was investigated in a placebo-controlled crossover trial with 8 dogs. Two »identical« soft tissue/bone operations were performed on the forelimbs of each animal with an interval of 28 days, to allow a paired comparison of the inflammatory signs and healing process. Significantly less swelling, but not less pain and limping, was observed when the glucocorticoid was administered. No adverse effect of the glucocorticoid was seen on wound and bone healing. The present experimental model is suggested useful for evaluation of anti-inflammatory drug effects in accidental trauma and orthopaedic surgery.
Keywords: betamethasone, post-operative swelling, pain, limping, wound and fracture healing
Sammendrag
Effekten av en i.m. injeksjon av betamethason (Celeston Chronodose®) på det post-operative forløp ble undersøkt i en placebo kontrollert overkryssnings-studie med 8 hunder. To »identiske« bløtvevs/hardvevs operasjoner ble utført på forlabbene på hvert dyr med 28 dagers mellomrom slik at en parvis sammenligning av det post-operative inflammatoriske forløp og tilheling kunne utføres. Det ble observert en statistisk signifikant reduksjon i helvelse, men ikke i smerte eller halting. Ingen bieffekter kunne sees på sår eller bentilhelingen etter administrasjon av betamethason. Den presenterte forsøksmodell kan være til nytte for å evaluere legemidlers anti-inflammatoriske virkning på forløpet etter aksidentelle traumer og ortopedisk kirurgiske inngrep.
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Acknowledgement
This work was supported by the Norwegian Agency for International Development (NORAD). The authors are grateful to L. Sandvik, MSc, for performing the statistical analysis.
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