The role of electromyography in clinical diagnosis of neuromuscular locomotor problems in the horse
Version of Record online: 5 JAN 2010
2004 EVJ Ltd
Equine Veterinary Journal
Volume 36, Issue 8, pages 718–722, December 2004
How to Cite
WIJNBERG, I. D., BACK, W., DE JONG, M., ZUIDHOF, M. C., VAN DEN BELT, A. J. M. and VAN DER KOLK, J. H. (2004), The role of electromyography in clinical diagnosis of neuromuscular locomotor problems in the horse. Equine Veterinary Journal, 36: 718–722. doi: 10.2746/0425164044848019
- Issue online: 5 JAN 2010
- Version of Record online: 5 JAN 2010
- Paper received for publication 10.05.04; Accepted 03.11.04
- cervical lesions;
Reasons for performing study: Systematically performed EMG needle examination of muscles provides essential information about the functional aspects of the motor unit. However, clinical studies in which information is given on the diagnostic and discriminative values of electromyography (EMG) in the horse are scarce.
Objectives: To determine to what extent inclusion of EMG analysis in clinical examination contributes to determination of type and localisation of abnormality.
Methods: EMG analysis, complete clinical examination and diagnosis of 108 horses (mean ± s.d. age 7.5 ± 3.8 years; bodyweight 548 ± 86 kg; height 1.67 ± 0.07 m) were performed, and results without and with EMG analysis compared.
Results: Without EMG, myopathy and neuropathy were diagnosed in 20 and 58 horses, respectively, and with EMG in 17 and 82 horses. EMG changed localisation in myopathy and neuropathy in 12 and 37% of cases, respectively. Lesions in the C1-T2, T2-L3 and L3-S3 segments were, respectively, diagnosed without EMG in 7, 11 and 30%, and with EMG in 27, 7 and 17% of cases. Where no clinical diagnosis could be made prior to EMG, many patients appeared to be suffering from localised cervical lesions (29%) or generalised neuropathy (54%).
Conclusions and potential relevance: The assistance of EMG in discriminating between normal, neuropathy and myopathy, and in locating pathology, contributes to diagnosis of neuromuscular problems.