Chalmers PN, Beck L, Miller M, et al. - This study was attempted to evaluate whether and how acromial morphology is not correlated with rotator cuff tearing or repair healing. A retrospective comparative study was performed to assess coronal, axial, and sagittal acromial tilt; acromial width, acromial anterior and posterior coverage, and glenoid version and inclination on MRI corrected into the plane of the glenoid. Researchers ascertained accuracy by comparison with CT via intraclass correlation coefficients (ICCs). This cohort included a total of 30 patients with MRI and CT, all ICCs were greater than 0.8. The change of 0.1 mm likely has no clinical significance, although the acromion is wider in rotator cuff tears (RCTs). The evidence showed that those with RCTs, the acromion is more steeply sloped from posteroinferior to anterosuperior. Due to native acromial morphology, these findings call into question subacromial impingement as a cause of rotator cuff tearing. After rotator cuff repair, it was shown that acromial morphology, critical shoulder angle, and glenoid inclination were not correlated with healing. Lateral acromioplasty was not supported by this study.