An Analysis of Biofluids & Heat Transfer Mechanisms

Click to view

Every somatic dysfunction leaves a trace in the body's physiology. The question is whether we have the tools to find it. This thesis by Hollie Victoria Acres approaches that question from an unexpected angle — through the physics of heat, the mechanics of fluid flow and the infrared light spectrum — to argue that thermal imaging may give canine osteopaths a window into dysfunction that palpation alone cannot reliably provide. The scope here is genuinely ambitious. Acres works through the fluid mechanics of biofluids — intravascular, interstitial and lymphatic — mapping how changes in mass flow rate alter the heat a body generates and releases. The connection matters because osteopathic philosophy has always held that impediments to fluid flow underlie disease. If that is true, then patterns of thermal asymmetry on the body's surface should, in theory, reflect those impediments — and thermal imaging cameras, operating in the infrared spectrum, can detect precisely those patterns. The thesis works through each of the five osteopathic models in turn. The biomechanical model shows how overloaded muscles run warmer and underloaded ones cooler, with hypothermic regions becoming stiffer and more injury-prone. The neurological model reveals how vasoconstriction and vasodilation — driven by the autonomic nervous system — produce the thermal signatures that cameras can quantify. The biopsychosocial sections raise particularly intriguing questions: can thermal imaging detect emotional states and pain anxiety in dogs who cannot tell us where it hurts? Acres includes thermal images taken in collaboration with veterinary thermographers, showing real cases where asymmetries visible on camera preceded or accompanied lameness that conventional examination had not fully explained. The limitations are addressed honestly — coat type, ambient temperature and camera resolution all affect results. What this thesis ultimately argues is that thermal imaging is not a replacement for osteopathic skill, but a powerful complement to it: an objective layer of assessment that catches change before symptoms become performance-limiting.

Hollie is based in NSW Central Coast, Australia and runs Canine Body Balance. To learn more about her work or to get in touch, click here.