The aim of this study is to quantify the functional deficits as a function of the dominance of the shoulder stabilized by the open procedure of Latarjet at 4.5 months postoperatively compared to healthy controls.

• Patients from two studies : "Reproducibility of functional tests of the shoulder for the return to sport of patients operated on anterior instability of the shoulder "CPP n ° 2018-A03013-52 and "Validation of the S-STARTS composite score to assess the functions of the shoulder and the patient's ability to return to sport after stabilization of the shoulder by the Latarjet procedure (VAL-S-STARTS)" MR3016020520
• healthy volunteers from two studies : "Reproducibility of functional tests of the shoulder for the return to sport of patients operated on anterior instability of the shoulder "CPP n ° 2018-A03013-52" and "Risk factors for shoulder dislocation in rugby players. Predictive validity of the S-STARTS composite score "MR4612110620

Inclusion criteria:

Patients: o patient between 15 and 45 years old

• Occurrence of the injury requiring surgery during a sports activity
• Reduced shoulder instability by the open Latarjet procedure
• Surgery performed by surgeons from the Santy Orthopedic Center (Lyon)
• Inclusion by decision of the surgeon during the visit 4 months postoperatively

Healthy volunteers :

• volunteer between 15 and 45 years old
• Practice a regular sporting activity

Both groups:

• Patient having signed an informed consent
• Subject affiliated or beneficiary of a social security scheme

Exclusion Criteria:

Patient group:

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

Healthy volunteers :

• Medical history of upper limb pain / injury within the past 12 months
• Medical history of orthopedic surgery on the upper limbs

Both groups:

• Protected subject: adult under guardianship, curatorship or other legal protection, deprived of liberty by judicial or administrative decision

Patient and healthy volunteers between 15 and 45 years old. Patients have an operated shoulder following an injury during a sport activity.