Telemetric measurements of strain in the metacarpus of the horse: a pilot study.

This research illustrates the use of telemetric systems to measure bone strain in a horse during movement. Using an FM transmitter, the changes in resistance were analyzed, correlating to the limb movement in different gaits.

Methodology

In their study, the researchers carried out the following steps:

• A rosette strain gauge, a device used to measure strain in a surface, was bonded to the metacarpus (part of the horse’s leg that corresponds to the human hand) of the horse.
• This gauge was connected to a miniature FM transmitter using lead wires. It is this system that facilitates a telemetric transmission – that is, the remote measurement and reporting of information.
• As the horse moved, resistance changes were recorded, capturing strain in the leg (or metacarpus) that corresponded to the horse’s movement.

Findings

Based on this set-up, the researchers found that:

• The pattern of the trace (which would demonstrate the strain on the horse’s metacarpus) remained similar across three different gaits, though the exact frequency and amplitude varied with each gait.
• These tracings were similar to those reported in previous studies of other species where non-telemetric (direct) transmission was used, suggesting the effectiveness of the telemetric system in capturing accurate readings of bone strain.

Significance

The outcomes of these measurements could have relevant applications in veterinary science, particularly concerning understanding the physical stresses on a horse’s limbs during different movements. By better understanding these stresses, preventative care and treatments for bone-related issues could potentially be improved. Additionally, the use of telemetry for such measurements itself represents a significant advancement, potentially broadening the scope of data collection in veterinary science.