Distal radius fractures are well-established in scientific literature as one of the most prevalent bone injuries treated within orthopedic trauma and sports rehabilitation services (Court-Brown & Caesar, 2006). Following the period of orthopedic immobilization or surgical intervention, the true challenge for medical departments lies in determining the optimal timing for functional discharge—a decision traditionally biased by subjectivity.
At the cellular level, bone structural damage and surgery trigger a persistent inflammatory response that drastically alters local microcirculation and metabolic activity (Rovira-Esteve, M. et al., 2026). While traditional imaging techniques (X-ray, CT) focus strictly on structural integrity, infrared thermography (IRT) emerges as a peripheral metabolic scan capable of objectifying and quantifying the homeostatic evolution of the injured tissue.
A cutting-edge prospective clinical study has validated the utility of infrared thermography as a screening tool for monitoring 17 patients with distal radius fractures. The research prospectively recorded the thermal profile of the patients' forearms and wrists at two critical milestones of the care process: the initial rehabilitation visit and the time of institutional clinical discharge.
By cross-referencing the thermographic data with traditional clinical indicators such as range of motion (ROM), high-value insights for clinical decision-making were uncovered:
At the start of treatment, the affected wrist exhibited a state of critical metabolic hyperthermia. The software detected significant thermal asymmetries, with mean differences reaching up to 1.4°C (within an indexed range between 0.8°C and 2.0°C).
Effect Size: This initial asymmetry is not background noise; it displays an extremely high statistical magnitude (Effect Size, ES = 0.9). In the bar chart, the injured limb (red) clearly reaches mean temperatures above 32°C, while the healthy limb (blue) remains below 31°C. This differential is the physiological footprint of angiogenesis, bone repair, and the metabolic overload of the adjacent ligamentous tissue.
At the time of discharge, the data revealed a diametrically opposed clinical scenario. Forearm thermal asymmetries widely disappeared. The mean thermal differential contracted drastically, falling below 0.2°C—a value well within the normal physiological variability for structural asymmetry (Rovira-Esteve, M. et al., 2026).
The resolution of this thermal differential (where both limbs equalize around 31°C in the discharge bar chart) acts as an objective biomarker confirming that the remission of deep inflammation is complete, validating the safety of clinical discharge from a physiological standpoint.
For the clinician, the indexed thermographic image provides a visual assessment of blood flow distribution. In acute phases (initial rehabilitation), the injured forearm displays "hot spots" or hyperemic Regions of Interest (ROIs), depicted in intense yellow, orange, and red tones. These patterns alert the physical therapist or rehabilitation specialist that the tissue is still metabolically unstable and vulnerable to excessive mechanical loads. At clinical discharge, this thermal map cools down and homogenizes—an unequivocal sign of successful tissue adaptation and recovery.
The contemporary management of distal radius fractures can no longer rely exclusively on whether a patient reports being pain-free—a biomarker frequently biased by neurocognitive and behavioral factors.
Integrating infrared thermography standardizes clinical discharge criteria, anchoring them in the demonstrable restoration of metabolic and inter-limb balance. Just as a blood test provides objective biochemical values, the Thermohuman thermal map indexes tissue homeostasis, transforming reactive medicine into a proactive, evidence-based clinical practice.
ThermoHuman has had the support of the Funds of the European Union and the Community of Madrid through the Operational Programme on Youth Employment. Likewise, ThermoHuman within the framework of the Export Initiation Program of ICEX NEXT, had the support of ICEX and the co-financing of the European Regional Development Fund (ERDF).
Thermohuman has received funding from the Centre for the Development of Industrial Technology (CDTI), in participation with the European Regional Development Fund (ERDF), for the R+D activities involved in creating a new tool, based on thermography, for the prediction and prevention of rheumatoid arthritis. See project detail.
