Algometry of pressure is a technique that measures the physiology of the nociceptive system. Acting directly on the responsive peripheral nociceptors to pressure stimuli, this technique allows the study on nociceptive integrity in normal subjects or having different algic syndromes. Utilizing 29 asymptomatic volunteers, the threshold of the painful perception was studied, measuring them in a direct way over the emergence of the supra-orbital, infra-orbital and mental nerves. The following algometric average were recorded: right mental nerve 46.2 Kg/cm2 and left 48.6 Kg/cm2; right supra-orbital nerve 47.7 Kg/cm2 and left 45.2 Kg/cm2; right infra-orbital nerve 53.9 Kg/cm2 and left 55.4 Kg/cm2. After reviewing the principles of the algometry utilization, we have validated this protocol, showing the average values obtained by measuring the trigeminal system, afterwards comparing them with an inervated region by cervical branches (major occipital nerve) and the temporal muscle.
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