In neonatal calves with contracted flexor tendons is the use of a 3 day course of oxytetracycline in conjunction with other treatments more effective in returning the hoof to normal full weight bearing on both the toe and heel compared to no oxytetracycline?
Clinical bottom line
Category of research question
The number and type of study designs reviewed
Three papers were critically reviewed. One randomised controlled study, one case series and one case study
Strength of evidence
Oxytetracycline as a treatment for contracted flexor tendons in calves was found to be slightly more effective in returning the hoof to normal weight bearing compared to no oxytetracycline. In contrast, oxytetracycline infusions for the treatment of contracted flexor tendons in calves do not have an influence on weight bearing and have no significant clinical effect
There was limited confidence that the estimated effect reported by the studies were close to the true effect, this is due to the studies having a number of limitations as well as the case series / study having limited evidentiary power. There is currently insufficient evidence from the literature to support or reject the use of oxytetracycline in the treatment of contracted flexor tendons in calves. Further studies, with higher strengths of evidence, are required to provide conclusive evidence
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Anderson, D. E., Desrochers, A. & St. Jean, G. (2008). Management of Tendon Disorders in Cattle. Veterinary Clinics of North America: Food Animal Practice. 24(3), 551–566. DOI: http://dx.doi.org/10.1016/j.cvfa.2008.07.008
Fazili, M. R., Bhattacharyya, H. K., Mir, M., Hafiz, A. & Tufani, N. A. (2014). Prevalence and effect of oxytetracycline on congenital fetlock knuckling in neonatal dairy calves. Onderstepoort Journal of Veterinary Research. 81(1). DOI: http://dx.doi.org/10.4102/ojvr.v81i1.710
Şirin, Ö. S., Çelik, M. T., Özmen, A. & Avki, S. (2014). Measurements of normal joint angles by goniometry in calves. Veterinary and Comparative Orthopaedics and Traumatology. 27(02), 120–123. DOI: http://dx.doi.org/10.3415/VCOT-13-04-0046
Lokai, M. (1992). Case selection for medical management of congenital flexural deformities in foals. Equine Practice. 14(4), 23–25.
Madison, J. B., Garber, J. L., Rice, B., Stumf, A. J., Zimmer, A. E. & Ott, E. A. (1994). Effect of oxytetracycline on metacarpophalangeal and distal interphalangeal joint angle in newborn foals. Journal of the American Veterinary Medical Association. 204(2), 246–249.
Kumar, N., Singh, P. P. & Mohanty, T. K. (2012). Contracted flexor tendon and its management with plaster casting and oxytetracycline in a Karan Fries crossbred calf. Intas Polivet. 13(2).
Metzner, M., Baumgart, I. & Klee, W. (2007). Effect of infusion of 60 mg/kg oxytetracycline on forelimb flexor tendon contracture in calves. Veterinary Record. 160(5), 166–167. DOI: http://dx.doi.org/10.1136/vr.160.5.166
vmd.defra.gov.uk. (2020). Summary Of Product Characteristics. [online] Available at: https://www.vmd.defra.gov.uk/productinformationdatabase/files/SPC_Documents/SPC_1888867.PDF [Accessed 13 November 2021].
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