Sheean AJ, et al. - This systematic review was undertaken to determine whether an increased critical shoulder angle (CSA) predisposes patients to higher re-tear rates and worse clinical results after rotator cuff (RC) repair. Six studies were included in the final analysis of a group of 1,126 studies that met the original search criteria, including information from 473 participants. Among comparative, nonrandomized studies, RC re-tear rates in patients with larger CSAs were higher. The heterogeneity of the relevant literature, however, limits this observation's strength. Based on the current literature, it remains uncertain whether, as a function of a decreased postoperative CSA, lateral acromioplasty impacts clinical results.