Inclusion Criteria:  Be between 20 and 80 years old. Patients who have been immobilized due to the following diagnoses: Suture of the rotator cuff or fracture of the proximal extremity of the humerus. Have signed the informed consent of acceptance in the participation of the study  Exclusion Criteria:  Present neurological pathology. Be subdued corticoid therapy. Have anticoagulant treatment or have had it less than a month ago. Insulin-dependent diabetic patients. Patients with hemophilia. Having diagnosed a psychological or psychiatric pathology. Non-intervened displaced humerus fractures.