Muret

Rotator cuff injuries are common, affecting about 30% of the general population. When initial rotator cuff repair does not heal properly, patients may continue to experience pain. During revision surgery, bacteria can be found in about 30% of cases without clear infection symptoms, called unexpected positive cultures (UPC). The impact of UPC on healing and outcomes after rotator cuff revision surgery is not well understood, and there is no consensus on how to manage these cases, especially regarding antibiotic use. This study will prospectively compare patients undergoing rotator cuff revision surgery who have either positive or negative bacteria cultures from samples taken during their surgery. The research involves collecting normally discarded samples such as sutures, tendon debridement tissue, and cleaning products for bacteriological analysis. Antibiotic treatment will not be started immediately after surgery or during the first month unless a pathogenic microorganism is identified, in which case antibiotics will be given and the patient will stop the study. Participants will be followed and assessed at 1 month, 3 months, 6 months, and 1 year after surgery. Researchers will evaluate shoulder function, tendon healing, post-operative complications, and other functional scores over this time. They will also describe the types of bacteria found in positive cultures. The study aims to better understand the effect of unexpected positive cultures on recovery and healing after rotator cuff revision.