Footprint preparation with nanofractures in a supraspinatus repair cuts in half the retear rate at 1-year follow-up. A randomized controlled trial - Ruiz Ibán, M.A.; Sanchez Alepuz, E.; Diaz Heredia, J.; Hachem, A.-I.; Ezagüi Bentolila, L.; Calvo, A.; Verdú, C.; de Rus Aznar, I.; Soler Romagosa, F. (Knee Surgery, Sports Traumatology, Arthroscopy, 2021)