Influence of electrode placement on effective field strength in the superficial digital flexor tendon of horses.

The research article explores how electrode placement affects the effective field strength of an electrical treatment device in the superficial digital flexor tendon of horses. It was found that the position of the electrode significantly influences the field strength of the current, which can be affected by surrounding structures.

Methods

• In this study, researchers used cadaver horse forelimbs void of visible damages (n=8), and a live pony.
• Microcurrents generated by a microcurrent electrical therapy device were directed in three orientations: proximodistal, dorsopalmar, and mediolateral on the entire forelimbs, isolated tendons, and the live pony.
• The experiment was conducted under various output settings, and the corresponding field strengths within the tendons were measured.

Findings

• The study discovered a consistent linear relationship between the electrical current generated and field strength in all conditions and directions.
• In dissected tendons, significant variations were found in all three directions, with the maximum field strength observed in the proximodistal direction and the lowest in the dorsopalmar direction.
• In the case of the entire forelimbs, field strength in the proximodistal orientation was considerably lower than that in the mediolateral direction.
• The findings from the live pony shared a similarity with those of the complete forelimbs.

Conclusions

• The results showed that the positioning of the electrode heavily influenced the field strength in the targeted tissue.
• There were numerous surrounding structures responsible for the substantial decrease in field strength within the target tissue.
• Considering these findings, the researchers proposed that these factors be given consideration when defining protocols for devices that employ electric current as a therapeutic approach, assuming its clinical effectiveness is proven.