The goal of this clinical trial is to determine the effectiveness of postoperative standard exercises with blood flow restriction therapy (BFRT) versus standard exercises alone on shoulder muscle strength and mass in participants with surgically treated rotator cuff tear. It is presumed that the addition of BFRT will significantly improve the shoulder strength and muscle mass at the end of the intervention period compared to the group receiving only standard exercises.

Patients who agree to participate in this research will be randomly assigned to a control group (standard exercises alone) or an experimental group (standard rehabilitation with BFRT). The duration of the postoperative intervention will be 12 weeks. The primary variables will be the shoulder muscle strength and muscle mass. Secondary variables will be the active shoulder mobility, pain intensity, upper limb disability, and health-related quality of life. Results will be measured at 0, 4 and 12 weeks postoperative.

Inclusion Criteria:

• Age between 40-65 years
• Symptomatic degenerative rotator cuff tear diagnosed by magnetic resonance imaging
• Undergoing arthroscopic rotator cuff repair
• Be able to read and understand Spanish

Exclusion Criteria:

• Massive irreparable rotator cuff tear
• Concomitant fracture
• Labral or nerve injury
• Suspicious of developing a frozen shoulder
• Revision surgery after rotator cuff repair
• Previous corticosteroid injection (< 6 months)
• Recent surgery (< 1 year) in the contralateral shoulder
• History of deep venous thrombosis/pulmonary embolism, peripheral vascular disease, thrombophilia or clotting disorders
• Severe or uncontrolled hypertension, or any comorbid condition that impedes participants to complete the intervention

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