The Effect of Capacitive-Resistive Electrical Therapy on Neck Pain and Dysfunction in Horses.
Authors: Parkinson Samantha D, Zanotto Gustavo M, Maldonado Mikaela D, King Melissa R, Haussler K K
Journal: Journal of equine veterinary science
Summary
# Editorial Summary: Capacitive-Resistive Electrical Therapy for Equine Neck Pain Neck pain and stiffness represent an increasingly prevalent clinical problem in horses, yet evidence supporting specific rehabilitation modalities remains limited. Parkinson and colleagues conducted a blinded, randomised controlled trial with 20 horses (10 active treatment, 10 sham control) to evaluate whether capacitive-resistive electrical therapy could reduce cervical pain and dysfunction, using twice-weekly treatments over six sessions to the lower cervical region (C4-C7). Despite some improvement in both groups by week three—assessed via manual palpation for pain and muscle hypertonicity, alongside objective postural stability measurements using inertial sensing technology—the treatment group showed no statistically significant advantage over sham controls across any measured parameter. The authors acknowledge important limitations, particularly the absence of definitive pathoanatomic diagnoses and lack of in vivo temperature data to confirm tissue heating; these factors may have masked genuine therapeutic effects in horses with specific cervical pathologies. For practitioners considering capacitive-resistive electrical therapy as part of multimodal cervical rehabilitation protocols, this 2022 evidence suggests the manufacturer-recommended parameters warrant reconsideration, and further research defining optimal treatment intensity, duration, and application sites is needed before recommending this modality to clients as an evidence-based intervention.
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Practical Takeaways
- •Capacitive-resistive electrical therapy using manufacturer-recommended protocols was ineffective for treating cervical pain and stiffness in horses—practitioners should not rely on this modality for neck pain management based on current evidence
- •Improvement occurred naturally in both treated and untreated horses, suggesting multimodal approaches or time may be beneficial regardless of this specific electrical therapy
- •Further research is needed to establish effective electrical therapy parameters before recommending this treatment to clients
Key Findings
- •Capacitive-resistive electrical therapy showed no significant difference compared to sham treatment for reducing neck pain and stiffness in horses over 4 weeks
- •Both treatment and control groups showed numerical improvement by week three, but improvements were not statistically significant
- •Manual palpation assessment of neck pain, stiffness, and muscle hypertonicity revealed no significant differences over time or between groups
- •No short-term adverse effects were observed with the treatment protocol