The aim of the study is to compare the level of postoperative pain after fitting the Game Ready splint, at 48 hours versus that observed with fitting a standard splint

Inclusion Criteria:

1. First-line reverse prosthesis
2. Without prosthetic history
3. Patient who has given his consent to participate in the observational study after being informed by the surgeon
4. Patient living in France and able to answer the questionnaire alone.
5. Subject affiliated to a social security scheme or beneficiary of such a scheme
6. Lack of participation in another clinical study

Exclusion Criteria:

1. Minor patient
2. Major subject protected by law, under curatorship or tutorship
3. Anterior prosthesis
4. Infection
5. Parkinson's, degenerative neurological disease
6. Pregnant or breastfeeding woman