“…A change in excitability could explain the patient reported symptoms used for defining FAI (as feeling of giving‐way, weakness, or recurrent sprains). Because the test is objective, noninvasive (the technique is transcutaneous, nor percutaneous), safe, economic, and easy [40,42,43,48,50], it can be used in rehabilitation and physical therapy consultations. Therefore, the aim of this study was to investigate the electrophysiologic excitability of the common fibular nerve, as measured by S‐D curves, in subjects with functional ankle instability compared with a control group without ankle impairment.…”