Purpose: To assess whether the use of platelet-rich plasma used as an adjuvant to arthroscopic rotator cuff repairs modify the rate of re-tears (measured by MRI) compared to a control group that only underwent the isolated arthroscopic repair. Hypothesis: Platelet rich plasma used as an adjuvant to arthroscopic rotator cuff repairs decrease the rate of retears.

Platelet-rich plasma used as an adjuvant to arthroscopic rotator cuff repairs modify the rate of re-tears (measured by MRI) compared to a control group that only underwent the isolated arthroscopic repair.

Inclusion Criteria:

• Adults between 50 and 75 years with a defined complete rotator cuff tear as compatible clinical and confirmation by magnetic resonance imaging (MRI).
• Minimum of 3 months of failed conservative treatment (anti-inflammatory, physical therapy and infiltration with corticosteroids)

Exclusion Criteria:

• Refusal to participate or informed consent,
• Revision surgery,
• Partial repair,
• Patients with shoulder osteoarthritis> 2
• Advanced fat infiltration of the rotator cuff muscles (STAGE 3 or 4)
• Systemic or rheumatoid arthritis,
• Uncontrolled diabetes, (patients for whom surgery is contraindicated in the preoperative evaluation by the clinician and anesthesiologist)
• Acute or chronic infections of the shoulder to be operated on
• Ongoing cancer chemotherapy therapies
• Sepsis, septic arthritis, osteomyelitis or other ongoing infectious processes;
• Previous operations on the affected shoulder,
• Patients with autoimmune diseases;
• Pregnant

We are planning on sharing the study protocol and the tables contaning all outcomes for every individual patient

2 years

The IPD may be requested to the principal investigator contacting him through e-mail at luciano.rossi@hospitalitaliano.org.ar