Secondary goals are to evaluate efficacy of infiltration of autologous micro-fragmented adipose tissue in arthroscopic rotator cuff repairs, in terms of post-operative pain reduction, gain in post-operative strength in abduction and external rotation; estimate incidence of re-ruptures at 1 and 2 years post-operatively, quantify the amount of fatty degeneration of the supraspinatus at 1 and 2 years post-operatively.