Inclusion Criteria:  Patient Group:  Male between 18 and 40 years-old Practice a regular sports activity before the injury (s) requiring surgery Present the clinical criteria leading to anterior abutment surgery using the Latarjet method Surgery performed by surgeons from the Jean-Mermoz Private Hospital (69008 Lyon) Have followed a post-surgery self-rehabilitation program  Control group:  Male between 18 and 40 years-old Practice a regular sports activity  Both group:  oPatient having signed an informed consent o Subject affiliated or beneficiary of a social security scheme  Exclusion Criteria:  Patient group:  Have another shoulder pathology on the side of the operated limb or on the contralateral side Present a constitutional hyper laxity Have stiffness or recurrence of dislocation of the shoulder post-surgery Have a body mass index greater than 30 kg / m² (to ensure sufficient accuracy to measure the movements of the scapula) Wear a pacemaker or any other metal device (e.g. patch with metal material) Present a contraindication to the use of measuring devices (intolerance to a weak electromagnetic field)  Control group:  Present during the study or have presented in the past any musculoskeletal pathology in the right or left shoulder (WOSI or WORC score greater than 250). Have a body mass index greater than 30 kg / m² (to ensure sufficient accuracy to measure the movements of the scapula) Wear a pacemaker or any other metal device (e.g. patch with metal material) Present a contraindication to the use of measuring devices (intolerance to a weak electromagnetic field)  Both group :  o Protected subject: adult under guardianship, curatorship or other legal protection, deprived of liberty by judicial or administrative decision