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Acta Ortopédica Brasileira

Print version ISSN 1413-7852

Abstract

GIORDANO, Vincenzo et al. Supplementary vitamin C does not accelerate bone healing in a rat tibia fracture model. Acta ortop. bras. [online]. 2012, vol.20, n.1, pp. 10-12. ISSN 1413-7852.  http://dx.doi.org/10.1590/S1413-78522012000100001.

OBJECTIVE: To investigate the role of ascorbic acid supplementation on bone healing after rat tibia fracture. METHODS: Thirty male Wistar rats were randomly divided into Vitamin C (Group A) and sham (Group B) groups (15 rats each). Group A received 200 mg intraperitoneally per kg per day of ascorbic acid and Group B was given saline 5 ml per kg per day intraperitoneally once a day. The animals were caged in pairs and allowed free access to tap water and a standard rodent chow ad libitum. Fractures were produced manually, they were not stabilized, and unprotected weight-bearing was allowed. At two, four, and six weeks post-fracture, the rats in both groups were anesthetized and sacrificed by cervical dislocation. Callus tissue was dissected, prepared, and analyzed histologically. Histomorphological analysis was performed at six weeks post-fracture and the extent of fracture healing was determined using a five-point scale. RESULTS: There were no histological and histomorphological differences between drug-treated animals and the shamin the three different stages studied. By six weeks post-fracture, the five animals of each group had a complete bone union. CONCLUSION: Under the studied conditions, intraperitoneal Vitamin C supplementation does not accelerate the fracture healing process after experimental tibia fracture in rats. Level of evidence: Level 2, individual study with experimental design.

Keywords : Ascorbic acid; Fracture healing; Tibial fractures.

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