Acne crème to Reduce Propionibacterium Acnes Load in Primary Shoulder Surgery

The study specific intervention product is a combination of Benzoylperoxid and Miconazolnitrat (Widmer Acne Crème Plus, 47033 Swissmedic) to apply daily in the evening on the skin from the nipple-areola complex laterally to the medial margin of the scapula and from a horizontal line through the nipple-areola complex cranially over the shoulder and dorsally to the spina scapulae. The application should be done regularly for 7 days before shoulder surgery. The study specific intervention product is authorized by Swissmedic for use in the treatment of acne and is used standardly in clinical practice.