Background: Scar formation is influenced by mechanical forces and may generate mechanical tension. Scars induce a temperature difference in the body objectified by thermal imaging camera. The osteopath's task is to ensure the tissue good mobility in the body. The aim of this study was to measure the influence of osteopathic treatment on a scar by thermal camera.

Method: 12 subjects were analyzed: 4 scars by wounds and 8 by operations. A thermal camera was used to measure the temperature variations of the scars and peri-scar area after cooled stimulation. Measurements were made before and after osteopathic treatment.

Results/findings: A significant difference was found between the scar and the peri-scar area before osteopathic treatment (p = 0.044) and no significant difference after osteopathic treatment (p = 0.069). Results showed that osteopathic treatment on a scar induces a more homogeneous local warming temperature.

Conclusion: The osteopathic treatment allows different warming between scar and peri-scar area; this suggests a modification of the connective tissue function after osteopathic treatment. Further studies are required to better understand the function of connective tissue and the mechanism of healing.