The aim of this study is to assess whether the indicators outcome of these tests discriminate between different populations. In particular to compare populations with shoulders without any history of injury with a population that had undergone a reduction in glenohumeral instability by the Latarjet technique.

The different objectives of this study are :

• To assess the intra- and intersessional reproducibility of functional shoulder tests
• To evaluate the influence of an anterior front stop using the Latarjet method on the functional profile of the shoulder compared to a healthy population.

Inclusion Criteria:

Patient group :

• Male patient
• Between 18 and 30 years-old
• Occurrence of the injury requiring surgery during a sports activity
• Reduction of shoulder instability by the Latarjet technique
• Surgery performed by surgeon from Santy orthopedic center (Lyon)
• Patient's inclusion by decision of the surgeon during the 4 months postoperatively visit

Healthy volunteer group :

• Male patient
• Between 18 and 30 years-old
• Patient regularly practicing sport activity.

Both groups :

• Patient having signed an informed consent
• Affiliated subject or beneficiary of a social security scheme

Exclusion Criteria:

Patient group :

• Contra indication from surgeon
• Having another pathology in the upper limbs
• Present a constitutional hyperlaxity
• Have stiffness or recurrence of dislocation of the shoulder post-surgery

Healthy volunteer group :

• Report a history of upper extremity pain / injury within the past 12 months
• Report a history of orthopedic surgery on the upper limbs

All participants :

• Protected subject : adult under guardianship, guardianship or other legal protection, deprived of liberty by judicial or administrative decision
• pregnant woman, breastfeeding, parturient