On the ICC's Path: a Prevalence Study
The number of trailers is growing all the time, and TRu seems to be a risky activity for the ankle joint. Ankle sprains can lead to significant health consequences, as in the case of chronic ankle instability.

However, there are no studies informing of the prevalence of chronic ankle instability in trail running. The aim of this study is therefore to take stock of chronic ankle instability in trail running in France.
- EligibilityCriteria: Inclusion Criteria:  Trail Running Ultra Trail Running runners Having participated́ in at least one Trail Running or Ultra Trail Running competition in their lifetime. Over 18 years of age (adult participants)  Exclusion Criteria:  Adults protected under Article L1121-8 of the French Public Health Code Minors Adults unable to give consent - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - StdAgeList: Adult, Older Adult - StudyPopulation: Adult Trail Running racers who have participated in at least one Trail Running competition in their lifetime. Subjects will be recruited via an online questionnaire distributed through various French Trail Running organizations and social networks. - SamplingMethod: Probability Sample