Reverse shoulder prostheses are the treatment of choice in elderly patients with rotator cuff arthropathy. Traditionally these patients have been immobilized for 3 weeks in the immediate postoperative period in order to have good pain control. However, there are no studies that determine the most appropriate period of immobilization. In fact, patients undergoing this type of surgery begin rehabilitation exercises within 24 hours of surgery without experiencing increased pain or requiring specific analgesic treatment. There is a demand in the elderly to limit immobilization time as much as possible, as some live alone and need to be self-sufficient and others have dependents. It would be good to know if it is really necessary to make an immobilization in these patients undergoing this type of surgery.

Inclusion Criteria:

• patients undergoing primary surgery of inverted prosthesis for rotator cuff arthropathy.
• age between 65-85 a.
• without inflammatory pathologies (rheumatoid arthritis, psoriatic arthritis, ...)
• acceptance to be part of the study.

Exclusion Criteria:

• prosthetic surgery prior to the affected limb.
• other indications of reverse prosthesis other than rotator cuff arthropathies (acute fractures, sequelae fractures, tumor surgery, prosthetic revision surgeries).
• no acceptance to participate in the study.

outcomes assessor will be blinded to the allocation of the patients