Anterior shoulder instability is a chronic condition that occurs after an anteromedial dislocation. Its prevalence is high in athletes but has been little studied in the armed forces. In general, patients with a first episode of dislocation have a 1 in 2 chance of experiencing at least one recurrence. The more recurrences there are, the more damage there is to the joint and the greater the disability for the patient. The decree determining the medical aptitude of military personnel emphasizes the need to have recourse to a specialized consultation to determine the classification of the soldier after a first episode of dislocation. In the absence of data collected specifically in the military population, classification is based on the surgeon's experience and extrapolation of results obtained in the general population.

Inclusion Criteria:

• Military member with a first episode of true anterior glenohumeral shoulder dislocation,
• Male or female,
• Major,
• Having a sufficient level of reading/writing of the French language,
• Did not object to participating in the study.

Exclusion Criteria:

• Patient with a history of homolateral shoulder dislocation or surgery on the affected shoulder,
• Collagen disease confirmed by genetic testing,
• Inflammatory arthropathy,
• History of rotator cuff injury,
• Insufficient French reading/writing skills,
• Under legal protection,
• Objection to participating in the study.

The study population will be composed of French military member with a first episode of true anterior glenohumeral shoulder dislocation.