The goal of this clinical trial is to reduce the risk for re-tear in rotator cuff surgeries and improve clinical results in a working age population. The main questions it aims to answer are:

If we can improve surgical results using the long head of the biceps tendon as a graft.

If we can reduce the risk of re-tear using the long head of the biceps tendon as a graft.

Researchers will compare participants with rotator cuff tears with two different surgical techniques to see if their clinical results improve using the long head of the biceps tendon as a graft compared with not using a graft.

Participants will be asked to get enrolled in the study not knowing in which group they will be assigned to by signing a Informed Consent Form and both groups would have the same follow up conditions and treatment.

Inclusion Criteria:

• Active workers.
• A supraspinatus tear diagnosed in MRI.
• Modified Rohi equal or over 5 points.
• Failed conservative treatment (at least 3 months of phisiotherapy) or surgical indication secondary to acute traumatic tear with severe functional limitation.
• Age between 18 and 65.
• Long head of the biceps tendon pathology.
• Able to understand and sign the Informed Consent Form.

Exclusion Criteria:

• Tear of the subscapularis or infraspinatus tendon.
• Supraspinatus tears <1cm.
• Lack of long head of the biceps tendon.
• Rotator Cuff Arthropathy (Hamada >3).
• Glenohumeral osteoarthritis.