Not all signals are the same
A therapeutic signal is characterised by its intensity, frequency and waveform. The combination of these characteristics can result in:
- An effective signal that leads to the patient’s condition being healed
- An inert signal that wastes precious time
- A harmful and potentially dangerous signal
If we go back to the example of light radiation, where different signals result in completely different biological effects:
- Ultraviolet radiation - tanning: effective signal
- Visible light - natural colours: inert signal
- Ionising radiation - cell death: harmful signal
It thus becomes clear that even things we are not able to perceive can influence our healing. The physical stimulus, undetected by our sense organs, interacts with the membranes of the target cells (bone and joint) and modifies their behaviour: proliferation, secretion of growth factors, inhibition of the release of inflammation mediators.